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		<title>Best Maternity Pillows 2025 – Comfort for Every Sleep Style</title>
		<link>https://www.momwink.com/best-maternity-pillows-2025/</link>
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		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Sun, 10 Aug 2025 15:05:27 +0000</pubDate>
				<category><![CDATA[Pregnancy]]></category>
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					<description><![CDATA[Best Maternity Pillows for All Sleeping Positions (2025 Edition) Best Maternity Pillows for All Sleeping Positions (2025 Edition) Best maternity pillows 2025 offer comfort and support for every sleeping position during pregnancy. In this guide, we compare top picks to help you rest better. Pregnancy sleep can be tricky. The right pillow eases hip and [&#8230;]]]></description>
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  <div class="wrap">
    <header class="hero">
      <h1>Best Maternity Pillows for All Sleeping Positions (2025 Edition)</h1>
      <p class="lead"><strong>Best maternity pillows 2025</strong> offer comfort and support for every sleeping position during pregnancy. In this guide, we compare top picks to help you rest better.</p>
      <p class="lead">Pregnancy sleep can be tricky. The right pillow eases hip and back pressure, supports your bump, and helps you settle into side-sleeping comfortably. Below are the 2025 picks we love for side, back, and combo sleepers—across budgets and bed sizes.</p>
      <div class="meta">
        <span class="chip">Updated: Aug 10, 2025</span>
        <span class="chip">Editor-tested picks</span>
        <span class="chip">Side • Back • Combo</span>
      </div>
      <div class="disclosure"><strong>Disclosure:</strong> This article contains affiliate links. If you buy through our links, we may earn a commission at no extra cost to you.</div>
    </header>

    <!-- Quick Picks (روابط مباشرة لأقسام البطاقات فقط — بدون تكرار المحتوى) -->
    <section id="quick">
      <h2>Quick Picks</h2>
      <div class="quick">
        <a class="q" href="#queen-rose"><strong>Best Overall</strong> QUEEN ROSE U-Shaped</a>
        <a class="q" href="#pharmedoc"><strong>Best for Side Sleepers</strong> PharMeDoc C-Shaped</a>
        <a class="q" href="#hiccapop-wedge"><strong>Best Budget</strong> hiccapop Wedge</a>
        <a class="q" href="#coop-body"><strong>Best for Small Beds</strong> Coop Body Pillow</a>
        <a class="q" href="#momcozy-u"><strong>Best Premium</strong> Momcozy Adjustable U</a>
        <a class="q" href="#meiz-cooling"><strong>Best for Hot Sleepers</strong> Meiz U Cooling</a>
      </div>
      <div class="callout">Tip: If you flip sides often, a <strong>U-shape</strong> is easiest—you won’t need to move the pillow each time.</div>
    </section>

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    <!-- Top 10 (product cards only — لا جدول) -->
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      <h2>Best Maternity Pillows — 2025 Picks</h2>

      <!-- 1 -->
      <article class="card" id="queen-rose">
        <div class="top">
          <a class="img" href="https://amzn.to/4maA3Md" target="_blank" rel="nofollow noopener sponsored">
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            <img decoding="async" src="https://m.media-amazon.com/images/I/71PmTBmS6xL._SX679_.jpg" alt="QUEEN ROSE U-Shaped Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>QUEEN ROSE U-Shaped Pregnancy Pillow <span class="pill">Editor’s Choice</span></h4>
            <p>Balanced belly, back, and knee support with easy side-switching.</p>
            <div class="meta2"><span class="tag">Shape: U</span><span class="tag">Washable cover</span><span class="tag">Full-body</span></div>
            <ul class="pros"><li>All-around alignment for hips and spine</li><li>Less rearranging when you turn</li><li>Cozy without feeling too stiff</li></ul>
            <ul class="cons"><li>Bulky on full/twin beds</li><li>Can feel warm in summer</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/4maA3Md" target="_blank" rel="nofollow noopener sponsored">Check price on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
            </div>
          </div>
        </div>
      </article>

      <!-- 2 -->
      <article class="card" id="pharmedoc">
        <div class="top">
          <a class="img" href="https://amzn.to/45qTpoV" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/51ZdnwSXEDS._AC_SX679_.jpg" alt="PharMeDoc C-Shaped Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>PharMeDoc C-Shaped Pregnancy Pillow <span class="pill">Best for Side Sleepers</span></h4>
            <p>Side-sleeping alignment that relieves hip pressure and supports the back curve.</p>
            <div class="meta2"><span class="tag">Shape: C</span><span class="tag">Hip alignment</span></div>
            <ul class="pros"><li>Excellent between-knee support</li><li>Stable back cradle</li></ul>
            <ul class="cons"><li>Less comfy for back sleeping</li><li>Needs occasional fluffing</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/45qTpoV" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
            </div>
          </div>
        </div>
      </article>

      <!-- 3 -->
      <article class="card" id="snoogle">
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          <a class="img" href="https://amzn.to/45r7CSL" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/71h96sU9S2L._AC_SX679_.jpg" alt="Leachco Snoogle Original" loading="lazy" onerror="setFallback(this)">
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          <div>
            <h4>Leachco Snoogle Original</h4>
            <p>Cult-favorite with structured support and a firmer, nurse-designed curve.</p>
            <div class="meta2"><span class="tag">Shape: C</span><span class="tag">Firm support</span></div>
            <ul class="pros"><li>Durable, holds shape</li><li>Ergonomic design</li></ul>
            <ul class="cons"><li>Cover changes take effort</li><li>Firmer feel not for everyone</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/45r7CSL" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#queen-rose">Back to top</a>
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      </article>

      <!-- 4 -->
      <article class="card" id="angqi">
        <div class="top">
          <a class="img" href="https://amzn.to/3Jset79" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/71sWcAYvzkL._AC_SX679_.jpg" alt="AngQi U-Shaped Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>AngQi U-Shaped Full Body Pillow</h4>
            <p>Full surround support at a friendly price—great value U-shape.</p>
            <div class="meta2"><span class="tag">Shape: U</span><span class="tag">Budget full-body</span></div>
            <ul class="pros"><li>All-in-one support</li><li>Removable cover</li></ul>
            <ul class="cons"><li>Fill compresses over time</li><li>Bulky to store</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/3Jset79" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
            </div>
          </div>
        </div>
      </article>

      <!-- 5 -->
      <article class="card" id="hiccapop-wedge">
        <div class="top">
          <a class="img" href="https://amzn.to/4mBMxMD" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/71oQUNYS9TL._AC_SX679_.jpg" alt="hiccapop Pregnancy Wedge" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>hiccapop Pregnancy Wedge</h4>
            <p>Compact firmness under the belly or behind the back—great airflow and travel size.</p>
            <div class="meta2"><span class="tag">Shape: Wedge</span><span class="tag">Cooling option</span></div>
            <ul class="pros"><li>Small footprint</li><li>Cooler than full-body pillows</li></ul>
            <ul class="cons"><li>Limited head/leg support</li><li>Not wraparound</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/4mBMxMD" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#queen-rose">Back to top</a>
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        </div>
      </article>

      <!-- 6 -->
      <article class="card" id="boppy-side">
        <div class="top">
          <a class="img" href="https://amzn.to/45ItQ4a" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/81VRnUttvKL._AC_SX679_.jpg" alt="Boppy Side Sleeper Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>Boppy Side Sleeper Pregnancy Pillow</h4>
            <p>Two small cushions with a stretch panel—keeps bump aligned while side-sleeping.</p>
            <div class="meta2"><span class="tag">Shape: Side support</span><span class="tag">Minimalist</span></div>
            <ul class="pros"><li>Very compact</li><li>Easy to wash</li></ul>
            <ul class="cons"><li>Less head/neck support</li><li>May shift if you toss</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/45ItQ4a" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
            </div>
          </div>
        </div>
      </article>

      <!-- 7 -->
      <article class="card" id="momcozy-u">
        <div class="top">
          <a class="img" href="https://amzn.to/4m6hlVL" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/71tDxp7Ug+L._SX679_.jpg" alt="Momcozy Adjustable U-Shaped Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>Momcozy Adjustable U-Shaped</h4>
            <p>Denser fill and adjustable sections—dial in firmer or softer support.</p>
            <div class="meta2"><span class="tag">Shape: U</span><span class="tag">Adjustable</span></div>
            <ul class="pros"><li>Customizable comfort</li><li>Quality cover & stitching</li></ul>
            <ul class="cons"><li>Pricier</li><li>Trial-and-error setup</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/4m6hlVL" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#queen-rose">Back to top</a>
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      </article>

      <!-- 8 -->
      <article class="card" id="meiz-cooling">
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          <a class="img" href="https://amzn.to/4llXK2U" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/61tE2vhexoL._SX679_.jpg" alt="Meiz U-Shaped Cooling Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>Meiz U-Shaped with Cooling Cover</h4>
            <p>Breathable cover to reduce heat build-up—ideal for warm sleepers.</p>
            <div class="meta2"><span class="tag">Shape: U</span><span class="tag">Cooling cover</span></div>
            <ul class="pros"><li>Airy fabric</li><li>Full-body support</li></ul>
            <ul class="cons"><li>Cooling can feel slick</li><li>Still takes space</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/4llXK2U" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
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            <img decoding="async" src="https://m.media-amazon.com/images/I/61+6JacXppL._SX679_.jpg" alt="INSEN C-Shaped Pregnancy Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>INSEN C-Shaped Maternity Pillow</h4>
            <p>Softer, plush feel at a wallet-friendly price—nice comfort/price balance.</p>
            <div class="meta2"><span class="tag">Shape: C</span><span class="tag">Plush</span></div>
            <ul class="pros"><li>Soft touch</li><li>Removable cover</li></ul>
            <ul class="cons"><li>May flatten faster</li><li>Less lumbar firmness</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/411qIxH" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#queen-rose">Back to top</a>
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      <article class="card" id="coop-body">
        <div class="top">
          <a class="img" href="https://amzn.to/4ful0KB" target="_blank" rel="nofollow noopener sponsored">
            <img decoding="async" src="https://m.media-amazon.com/images/I/71+LkzIE+-L._AC_SX679_.jpg" alt="Coop Home Goods Adjustable Body Pillow" loading="lazy" onerror="setFallback(this)">
          </a>
          <div>
            <h4>Coop Home Goods Adjustable Body Pillow</h4>
            <p>Straight, adjustable loft—great for small beds and postpartum versatility.</p>
            <div class="meta2"><span class="tag">Shape: Straight</span><span class="tag">Adjustable</span></div>
            <ul class="pros"><li>Customizable fill</li><li>Multi-use beyond pregnancy</li></ul>
            <ul class="cons"><li>No wraparound back support</li><li>Needs reshaping</li></ul>
            <div class="cta">
              <a class="btn btn-amz" href="https://amzn.to/4ful0KB" target="_blank" rel="nofollow noopener sponsored">See it on Amazon</a>
              <a class="btn btn-ghost" href="#types">Which shape suits me?</a>
            </div>
          </div>
        </div>
      </article>
    </section>

    <!-- Types (مختصر وواضح) -->
    <section id="types">
      <h2>Types of Maternity Pillows</h2>
      <h3>U-Shaped</h3><p>Wraps both sides for simultaneous back and belly support. Great if you turn at night.</p>
      <h3>C-Shaped</h3><p>Curves along your back and between your knees to align hips and ease lower-back strain.</p>
      <h3>Wedge</h3><p>Small, firm triangle under belly or behind back. Best for hot sleepers and tight spaces.</p>
      <h3>Straight Body Pillow</h3><p>Long, huggable pillow with minimal footprint; less back support than U/C shapes.</p>
    </section>

    <!-- FAQs -->
    <section id="faqs">
      <h2>FAQs</h2>
      <details><summary>When should I start using a maternity pillow?</summary><p>Anytime it improves your sleep—many start late in the first or early in the second trimester.</p></details>
      <details><summary>Can I use it after birth?</summary><p>Yes—U/C pillows often help with nursing positions and postpartum pressure relief.</p></details>
      <details><summary>Is side-sleeping better in late pregnancy?</summary><p>Healthcare guidance often favors side-sleeping (especially left side) for circulation and comfort. Confirm with your provider. <a href="https://www.acog.org/womens-health/faqs" target="_blank" rel="nofollow noopener">ACOG</a></p></details>
    </section>

    <!-- Verdict + Internal links -->
    <section id="verdict">
      <h2>Editor’s Verdict</h2>
      <p>The best maternity pillow is the one you’ll actually use nightly. Most readers thrive with a <strong>U-shaped</strong> pillow for continuous back/belly/hip support. If you’re short on space or sleep hot, try a <strong>wedge</strong> or an <strong>adjustable straight body pillow</strong>.</p>
      <div class="related">
        <a href="https://momwink.com/first-trimester-pregnancy-tips/" target="_blank" rel="noopener">First Trimester Pregnancy Tips</a>
        <a href="https://momwink.com/postpartum-hair-loss-solutions/" target="_blank" rel="noopener">Postpartum Hair Loss Solutions</a>
        <a href="https://momwink.com/best-sleep-sacks-for-toddlers/" target="_blank" rel="noopener">Best Sleep Sacks for Toddlers</a>
        <a href="https://momwink.com/ovulation-calculator/" target="_blank" rel="noopener">Ovulation Calculator</a>
      </div>
    </section>

    <!-- JSON-LD -->
    <script type="application/ld+json">
    {
      "@context":"https://schema.org",
      "@type":"Article",
      "headline":"Best Maternity Pillows for All Sleeping Positions (2025 Edition)",
      "description":"Our 2025 guide compares the best maternity pillows for every sleeping position, with pros/cons and quick picks.",
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				</div>
					</div>
				</div>
				</div>
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			</item>
		<item>
		<title>Fertility Window Calculator – Find Your 2025 Fertile Days Fast</title>
		<link>https://www.momwink.com/fertility-window-calculator/</link>
					<comments>https://www.momwink.com/fertility-window-calculator/#respond</comments>
		
		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Sat, 09 Aug 2025 18:52:17 +0000</pubDate>
				<category><![CDATA[Pregnancy]]></category>
		<category><![CDATA[Tools & Resources]]></category>
		<guid isPermaLink="false">https://momwink.com/?p=854</guid>

					<description><![CDATA[Fertility Window Calculator – Find Your 2025 Fertile Days Fast 🩷 Fertility Window Calculator – Plan Your Best Conception Days Trying to conceive and want clarity on the best days to try? Our Fertility Window Calculator gives you a simple, science-informed forecast of your fertile days, the likely ovulation date, and the expected next period [&#8230;]]]></description>
										<content:encoded><![CDATA[		<div data-elementor-type="wp-post" data-elementor-id="854" class="elementor elementor-854" data-elementor-post-type="post">
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				<div class="elementor-element elementor-element-4177e76 elementor-widget elementor-widget-html" data-id="4177e76" data-element_type="widget" data-widget_type="html.default">
					<!-- ===== SEO META ===== -->
<title>Fertility Window Calculator – Find Your 2025 Fertile Days Fast</title>
<meta name="description" content="Use our Fertility Window Calculator to see your fertile days, ovulation date, and the best time to conceive — with a clear mini calendar and instant results.">
<link rel="canonical" href="https://momwink.com/fertility-window-calculator" />

<article itemscope itemtype="https://schema.org/Article">
  <meta itemprop="headline" content="Fertility Window Calculator – Find Your 2025 Fertile Days Fast">
  <meta itemprop="author" content="MomWink Editors">
  <meta itemprop="datePublished" content="2025-08-09">
  <meta itemprop="dateModified" content="2025-08-09">

  <h1>🩷 <strong>Fertility Window Calculator</strong> – Plan Your Best Conception Days</h1>

  <p>
    Trying to conceive and want clarity on the best days to try? Our <strong>Fertility Window Calculator</strong> gives you a simple, science-informed forecast of your <em>fertile days</em>, the likely <strong>ovulation date</strong>, and the expected next period — all visualized on a friendly <strong>mini calendar</strong>. Enter the first day of your last period and your average cycle length, then instantly see the <em>fertile window</em> (the days when intercourse is most likely to lead to conception) highlighted clearly. You can save or print the results and come back any time.
  </p>

  <figure>
    <img fetchpriority="high" decoding="async" src="/images/fertility-window-calculator.webp" width="1200" height="630" alt="Fertility Window Calculator">
    <figcaption>See your fertile window and ovulation day in one clear monthly calendar.</figcaption>
  </figure>

  <h2>📌 How to Use the <strong>Fertility Window Calculator</strong></h2>
  <ol>
    <li>Select the <strong>first day of your last period (LMP)</strong>.</li>
    <li>Choose your <strong>average cycle length</strong> (20–44 days).</li>
    <li>Click <em>Show My Fertile Days</em> to see your fertile window, ovulation day, and next period.</li>
  </ol>
  <p>
    The <strong>Fertility Window Calculator</strong> assumes a luteal phase close to 14 days for most cycles; real timing varies. If your cycles are irregular, pair this tool with ovulation tests (OPKs), basal body temperature, or guidance from your clinician. For deeper planning, you can also use our <a href="/ovulation-calculator">Ovulation Calculator</a>, <a href="/implantation-calculator">Implantation Calculator</a>, and <a href="/pregnancy-week-by-week-tracker">Pregnancy Week-by-Week Tracker</a>.
  </p>

  <h2>🧠 Why Knowing Your Fertile Window Matters</h2>
  <p>
    The fertile window spans the five days before ovulation plus the day of ovulation. Sperm can survive in cervical mucus for up to several days, so having intercourse during these days raises your chances of conception. Our <strong>Fertility Window Calculator</strong> translates that biology into dates you can act on. It’s designed for everyday use: friendly language, clear cards, and a calendar that highlights what’s important without confusion.
  </p>
  <p>
    While typical models use a 14-day luteal phase, your body may differ by a day or two. If you’re actively trying to conceive, consider tracking ovulation signs, using OPKs, and reviewing reliable medical resources such as
    <a href="https://www.mayoclinic.org/healthy-lifestyle/getting-pregnant/in-depth/fertility/art-20047608" rel="nofollow noopener" target="_blank">Mayo Clinic</a>
    and the
    <a href="https://www.nhs.uk/conditions/pregnancy-and-baby/getting-pregnant/" rel="nofollow noopener" target="_blank">NHS guide to getting pregnant</a>.
  </p>

  <h2>📅 <strong>Fertility Window Calculator</strong> – Interactive Tool</h2>

  <div class="fw-tool" role="region" aria-label="Fertility Window Calculator">
    <div class="grid2">
      <div>
        <label for="lmpDate">📅 First Day of Last Period (LMP)</label>
        <input type="date" id="lmpDate">
      </div>
      <div>
        <label for="cycleLen">🔁 Average Cycle Length</label>
        <select id="cycleLen" aria-label="Average Cycle Length">
          <option value="">-- Select --</option>
          <option>20</option><option>21</option><option>22</option><option>23</option><option>24</option>
          <option>25</option><option>26</option><option>27</option><option selected>28</option><option>29</option>
          <option>30</option><option>31</option><option>32</option><option>33</option><option>34</option>
          <option>35</option><option>36</option><option>37</option><option>38</option><option>39</option>
          <option>40</option><option>41</option><option>42</option><option>43</option><option>44</option>
        </select>
      </div>
    </div>
    <button id="showBtn" class="cta">💖 Show My Fertile Days</button>

    <!-- results -->
    <div id="resultShell" style="display:none">
      <div id="cards" class="cards"></div>
      <div id="miniCal" class="miniCal"></div>
      <div class="actions">
        <button class="printBtn" onclick="window.print()">🖨️ Print</button>
      </div>
    </div>
  </div>

  <h2>❓ FAQs About Fertility Windows</h2>
  <h3>Does this replace medical advice?</h3>
  <p>No. The <strong>Fertility Window Calculator</strong> provides educational estimates. For personalized guidance, follow your clinician’s advice.</p>

  <h3>What if my cycles are irregular?</h3>
  <p>Use your best average and combine this with OPKs/BBT. If cycles vary widely, a clinician can help rule out underlying causes.</p>

  <h3>How can I boost my chances?</h3>
  <p>Time intercourse across the fertile window, maintain healthy habits, and see our <a href="/foods-that-boost-fertility">foods that may support fertility</a>.</p>
</article>

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:root{
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.cards{display:grid;gap:12px;margin-top:14px}
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.card{display:flex;gap:12px;align-items:flex-start;background:#fff;border-radius:14px;padding:14px;box-shadow:0 8px 18px rgba(0,0,0,.06)}
.ico{flex:0 0 42px;height:42px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--pink);font-size:20px}
.card h4{margin:0 0 4px;color:var(--pink-2)}
.pill{display:inline-block;margin-top:6px;padding:6px 10px;border-radius:999px;font-size:13px}
.pill-range{background:#fff0f6;border:1px solid #f8bbd0;color:#8e0038}
.pill-ov{background:#e8f0ff;border:1px solid var(--blue-2);color:#0d47a1}
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.actions{display:flex;justify-content:flex-end;margin-top:10px}
.printBtn{background:var(--pink-2);color:#fff;border:none;border-radius:999px;padding:10px 16px;cursor:pointer}

/* mini calendar */
.miniCal{margin-top:16px;background:#fff;border-radius:22px;padding:16px;box-shadow:0 10px 22px rgba(0,0,0,.06)}
.mc-head{display:flex;justify-content:space-between;align-items:center;font-weight:800;color:#4a4a4a;margin:2px 6px 12px}
.mc-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;text-align:center}
.mc-grid .dow{font-weight:700;color:#8c8c8c}
.mc-cell{background:#f6f7f9;border-radius:16px;min-height:54px;padding:6px 0;position:relative;color:#444;font-weight:600;display:grid;place-items:center;transition:.15s}
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.fertile{background:#ecfff4;border:2px solid var(--mint-b)}
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.tag{background:#fff;border:1px solid #ececec;padding:8px 14px;border-radius:999px;font-weight:600;color:#555}
.tag .em{margin-inline-end:8px}

@media print{ .fw-tool .cta,.actions{display:none} .fw-tool{box-shadow:none;background:#fff} }
</style>

<!-- ===== SCRIPTS (UTC-safe) ===== -->
<script>
/* UTC helpers (avoid timezone drift) */
function makeUTC(y,m,d){ return new Date(Date.UTC(y,m,d,12,0,0)); } // noon UTC
function parseUTC(s){ const [Y,M,D]=s.split('-').map(Number); return makeUTC(Y,M-1,D); }
function addDaysUTC(d,n){ return makeUTC(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate()+n); }
function isoUTC(d){ const y=d.getUTCFullYear(), m=String(d.getUTCMonth()+1).padStart(2,'0'), day=String(d.getUTCDate()).padStart(2,'0'); return `${y}-${m}-${day}`; }
function fmtLong(d){ const local=new Date(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), 12,0,0); return local.toLocaleDateString('en-US',{weekday:'short',month:'short',day:'numeric',year:'numeric'}); }
function rangeDays(start,len){ const out=[]; for(let i=0;i<len;i++){ out.push(addDaysUTC(start,i)); } return out; }

/* Main calculation */
document.getElementById('showBtn')?.addEventListener('click', generateFW);

function generateFW(){
  const lmpVal = document.getElementById('lmpDate').value;
  const cycleLen = parseInt(document.getElementById('cycleLen').value,10);
  if(!lmpVal || isNaN(cycleLen)){ alert('Please select a valid LMP and cycle length.'); return; }

  const lmp = parseUTC(lmpVal);
  const ovulation = addDaysUTC(lmp, cycleLen - 14);
  const fertileStart = addDaysUTC(ovulation, -5);
  const fertileEnd   = ovulation; // inclusive
  const nextPeriod   = addDaysUTC(lmp, cycleLen);

  // sets for calendar
  const fertileSet = new Set(rangeDays(fertileStart, 6).map(isoUTC));
  const ovKey = isoUTC(ovulation);
  const periodSet = new Set(rangeDays(lmp, Math.min(10, Math.max(2, Math.round(cycleLen*0.18)))) .map(isoUTC)); // period 2–10d heuristic

  // show results
  document.getElementById('resultShell').style.display='block';

  // cards
  const cards = document.getElementById('cards');
  cards.innerHTML = `
    <div class="card">
      <div class="ico">🌼</div>
      <div>
        <h4>Your Fertile Window</h4>
        <div class="pill pill-range">${fmtLong(fertileStart)} – ${fmtLong(fertileEnd)}</div>
        <p class="meta">The fertile window includes the 5 days before ovulation plus ovulation day.</p>
      </div>
    </div>
    <div class="card">
      <div class="ico" style="background:#0d47a1">👶</div>
      <div>
        <h4>Likely Ovulation Day</h4>
        <div class="pill pill-ov">${fmtLong(ovulation)}</div>
        <p class="meta">Assumes a ~14-day luteal phase; actual timing can vary.</p>
      </div>
    </div>
    <div class="card">
      <div class="ico" style="background:#8a5a00">📅</div>
      <div>
        <h4>Expected Next Period</h4>
        <div class="pill pill-next">${fmtLong(nextPeriod)}</div>
        <p class="meta">If no period arrives, consider testing 1–3 days after suspected implantation.</p>
      </div>
    </div>
  `;

  // calendar (month of ovulation for best context)
  const monthDate = makeUTC(ovulation.getUTCFullYear(), ovulation.getUTCMonth(), 1);
  const cal = document.getElementById('miniCal');
  cal.innerHTML = '';
  renderMiniCalendar(cal, monthDate, {fertileSet, ovKey, periodSet});
}

/* Calendar rendering */
function renderMiniCalendar(container, monthDate, sets){
  const first = makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth(), 1);
  const daysInMonth = new Date(Date.UTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, 0)).getUTCDate();
  const startWd = first.getUTCDay();

  const head = document.createElement('div');
  head.className='mc-head';
  head.innerHTML = `<span>${new Date(first.getUTCFullYear(), first.getUTCMonth(), 1).toLocaleString('en-US',{month:'long',year:'numeric'})}</span>`;
  container.appendChild(head);

  const grid = document.createElement('div');
  grid.className='mc-grid';
  grid.innerHTML = `<div class="dow">Sun</div><div class="dow">Mon</div><div class="dow">Tue</div><div class="dow">Wed</div><div class="dow">Thu</div><div class="dow">Fri</div><div class="dow">Sat</div>`;
  container.appendChild(grid);

  // padding before month
  for(let i=0;i<startWd;i++){
    const d = addDaysUTC(first, -(startWd-i));
    grid.appendChild(makeCell(d,true,sets));
  }
  // days of month
  for(let d=1; d<=daysInMonth; d++){
    grid.appendChild(makeCell(makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth(), d), false, sets));
  }
  // padding after month
  while(grid.children.length%7!==0){
    const d = makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, (grid.children.length%7)+1);
    grid.appendChild(makeCell(d,true,sets));
  }

  const leg = document.createElement('div');
  leg.className='mc-legend';
  leg.innerHTML = `
    <span class="tag"><span class="em">🌼</span>Fertile window</span>
    <span class="tag"><span class="em">👶</span>Ovulation</span>
    <span class="tag"><span class="em">🩸</span>Period</span>`;
  container.appendChild(leg);
}

function makeCell(date, muted, sets){
  const key = isoUTC(date);
  const cell = document.createElement('div');
  cell.className = 'mc-cell' + (muted?' mc-muted':'');
  const dayNum = date.getUTCDate();
  cell.textContent = dayNum;

  const inFertile = sets.fertileSet.has(key);
  const isOv = sets.ovKey === key;
  const isPeriod = sets.periodSet.has ? sets.periodSet.has(key) : false;

  // period bubble
  if(isPeriod){
    cell.innerHTML = `<div class="period">${dayNum}</div>`;
  }

  // fertile band
  if(inFertile){
    cell.classList.add('fertile');
    const inPrev = sets.fertileSet.has(isoUTC(addDaysUTC(date,-1)));
    const inNext = sets.fertileSet.has(isoUTC(addDaysUTC(date, 1)));
    if(!inPrev &&  inNext) cell.classList.add('fertile-start');
    else if(inPrev && inNext) cell.classList.add('fertile-mid');
    else if(inPrev && !inNext) cell.classList.add('fertile-end');
    else cell.classList.add('fertile-mid');
  }

  // ovulation icon
  if(isOv){
    const o = document.createElement('span');
    o.className='ovIcon';
    o.textContent='👶';
    cell.appendChild(o);
  }
  return cell;
}
</script>

<!-- ===== FAQ SCHEMA (SEO) ===== -->
<script type="application/ld+json">
{
  "@context":"https://schema.org",
  "@type":"FAQPage",
  "mainEntity":[
    {"@type":"Question","name":"Does this replace medical advice?","acceptedAnswer":{"@type":"Answer","text":"No. The Fertility Window Calculator provides educational estimates only. For personalized guidance, consult your clinician."}},
    {"@type":"Question","name":"What if my cycles are irregular?","acceptedAnswer":{"@type":"Answer","text":"Use your best average and combine the tool with OPKs/BBT. If cycles vary widely, seek medical advice."}},
    {"@type":"Question","name":"How can I boost my chances?","acceptedAnswer":{"@type":"Answer","text":"Time intercourse across the fertile window, maintain healthy habits, and review credible resources such as Mayo Clinic and NHS."}}
  ]
}
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				</div>
					</div>
				</div>
				</div>
		]]></content:encoded>
					
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			</item>
		<item>
		<title>Pregnancy Week-by-Week Tracker – See Baby’s Growth from Week 1 to 40</title>
		<link>https://www.momwink.com/pregnancy-week-by-week-tracker/</link>
					<comments>https://www.momwink.com/pregnancy-week-by-week-tracker/#respond</comments>
		
		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Sat, 09 Aug 2025 07:47:54 +0000</pubDate>
				<category><![CDATA[Pregnancy]]></category>
		<category><![CDATA[Tools & Resources]]></category>
		<guid isPermaLink="false">https://momwink.com/?p=821</guid>

					<description><![CDATA[🩷 Pregnancy Week-by-Week Tracker Our Pregnancy Week-by-Week Tracker helps you know your exact pregnancy week and what’s happening inside your body, from week 1 to week 40. Enter your last menstrual period (LMP) or your estimated due date (EDD), and you’ll instantly see baby’s fruit-size comparison, length/weight estimates, what to expect in your body, and [&#8230;]]]></description>
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					<!-- ===== SEO META ===== -->
<title>Pregnancy Week-by-Week Tracker – See Baby’s Growth (Weeks 1–40)</title>
<meta name="description" content="Use our Pregnancy Week-by-Week Tracker to see your exact pregnancy week, baby’s fruit size, length and weight, and what’s happening to your body—from week 1 to 40." />
<link rel="canonical" href="https://momwink.com/pregnancy-week-by-week-tracker" />

<article itemscope itemtype="https://schema.org/Article">
  <meta itemprop="headline" content="Pregnancy Week-by-Week Tracker – See Baby’s Growth (Weeks 1–40)">
  <meta itemprop="author" content="MomWink Editors">
  <meta itemprop="datePublished" content="2025-08-09">
  <meta itemprop="dateModified" content="2025-08-09">

  <h1>🩷 Pregnancy Week-by-Week Tracker</h1>
  <p>
    Our <strong>Pregnancy Week-by-Week Tracker</strong> helps you know your exact pregnancy week and what’s happening inside your body, from week 1 to week 40. Enter your <strong>last menstrual period (LMP)</strong> or your <strong>estimated due date (EDD)</strong>, and you’ll instantly see baby’s fruit-size comparison, length/weight estimates, what to expect in your body, and quick, practical tips. We designed this tracker to be accurate, clear, and friendly for everyday moms while reflecting trusted medical ranges. It’s a companion you can revisit each week to stay informed and confident as your pregnancy progresses.
  </p>

  <figure>
    <img decoding="async" src="/images/pregnancy-week-by-week-tracker.webp" width="1200" height="630" alt="Pregnancy Week-by-Week Tracker">
    <figcaption>Simple, science-based guidance you can check weekly.</figcaption>
  </figure>

  <h2>📌 How to Use the <strong>Pregnancy Week-by-Week Tracker</strong></h2>
  <p>
    Choose whether you want to calculate using your <strong>LMP</strong> or your <strong>EDD</strong>. The tracker converts your input to a precise gestational week based on a standard 280-day term and shows you a week card with baby’s size, estimated length (CRL in the first trimester then crown-heel), estimated weight, body changes, and helpful tips. You can move to the next/previous week, jump directly to any week using the dropdown, view all weeks at once, print, and come back later—your last inputs are saved for convenience.
  </p>

  <h2>💡 Why Use Our <strong>Pregnancy Week-by-Week Tracker</strong></h2>
  <p>
    Information overload can feel overwhelming. This <strong>Pregnancy Week-by-Week Tracker</strong> focuses on what matters most: science-based ranges, plain language, and a clean layout. We align fruit-size metaphors with common week milestones so you can visualize growth at a glance. Length and weight values are rounded mid-week estimates taken from common reference ranges used for public education. Every pregnancy is unique—so treat these values as an educational guide, not a diagnosis. Always follow your clinician’s advice, especially if you have specific medical questions or unusual symptoms.
  </p>

  <h2>📦 <strong>Pregnancy Week-by-Week Tracker</strong>: What You’ll See Each Week</h2>
  <p>
    Each week card in the <strong>Pregnancy Week-by-Week Tracker</strong> includes: <strong>Baby’s Size</strong> (fruit comparison), <strong>Length</strong> (CRL until ~week 13, then crown-heel), <strong>Weight</strong> (grams), <strong>Your Body</strong> (common changes), and <strong>Tips</strong> (nutrition, rest, appointments). The progress bar shows your overall journey from week 1 to week 40. You’ll also see your computed <strong>LMP</strong> and <strong>EDD</strong> on each card for clarity.
  </p>

  <!-- ===== TRACKER TOOL (Interactive) ===== -->
  <div class="pw-tool" role="region" aria-label="Pregnancy Week-by-Week Tracker">
    <div class="inputRow">
      <label class="mode"><input type="radio" name="mode" value="lmp" checked> Use LMP</label>
      <label class="mode"><input type="radio" name="mode" value="edd"> Use Due Date</label>
    </div>

    <div class="dates">
      <div id="lmpWrap">
        <label for="lmpDate">📅 First day of last period (LMP)</label>
        <input type="date" id="lmpDate">
      </div>
      <div id="eddWrap" style="display:none">
        <label for="eddDate">🗓️ Estimated due date (EDD)</label>
        <input type="date" id="eddDate">
      </div>
      <button id="showBtn" class="cta">💖 Show My Week</button>
    </div>

    <!-- Progress -->
    <div id="progressShell" class="prog" style="display:none">
      <div class="progHead">
        <div class="progTitle">Pregnancy Progress</div>
        <div class="progPct" id="progPct">0%</div>
      </div>
      <div class="progBar">
        <div class="progFill" id="progFill" style="width:0%"></div>
      </div>
      <div class="progScale">
        <span>Week 1</span><span>Week 13</span><span>Week 27</span><span>Week 40</span>
      </div>
    </div>

    <!-- Nav -->
    <div id="navShell" class="navbar" style="display:none">
      <button id="prevW" class="navbtn" aria-label="Previous week">&larr; Prev</button>
      <div class="wkPicker">
        <label for="wkSelect" class="sr-only">Go to week</label>
        <select id="wkSelect" aria-label="Go to week"></select>
      </div>
      <button id="nextW" class="navbtn" aria-label="Next week">Next &rarr;</button>
    </div>

    <!-- Results -->
    <div id="results" aria-live="polite"></div>
    <div id="actions" class="actions" style="display:none">
      <button class="printBtn" onclick="window.print()">🖨️ Print</button>
      <button class="showAllBtn" id="showAllBtn">📚 Show All Weeks</button>
    </div>
  </div>

  <h2>🔗 Related Guides for a Smoother Journey</h2>
  <ul>
    <li><a href="/due-date-calculator">Due Date Calculator – Estimate in 4 Easy Steps</a></li>
    <li><a href="/first-trimester-pregnancy-tips">Top 10 First Trimester Pregnancy Tips</a></li>
    <li><a href="/foods-that-boost-fertility">Top Foods That Boost Fertility</a></li>
    <li><a href="/what-to-do-after-a-c-section">What to Do After a C-Section</a></li>
  </ul>

  <h2>❓ FAQ</h2>
  <h3>How does the <strong>Pregnancy Week-by-Week Tracker</strong> calculate my week?</h3>
  <p>We compute gestational age from your LMP or by reversing from your EDD (40 weeks = 280 days). We use UTC dates to avoid timezone shifts.</p>

  <h3>Are the size and weight exact?</h3>
  <p>No. They are mid-week educational estimates drawn from widely used public references. Always follow your clinician’s personalized guidance.</p>

  <h3>Where can I read more?</h3>
  <p>
    See educational references from
    <a href="https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20046151" rel="nofollow noopener" target="_blank">Mayo Clinic (week-by-week fetal development)</a>
    and
    <a href="https://www.nhs.uk/pregnancy/" rel="nofollow noopener" target="_blank">NHS Pregnancy Guide</a>.
  </p>
</article>

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<!-- ====== SCRIPTS (UTC; no timezone drift) ====== -->
<script>
/* UTC helpers */
function makeUTC(y,m,d){ return new Date(Date.UTC(y,m,d,12,0,0)); } // noon UTC
function parseUTC(s){ const [Y,M,D]=s.split('-').map(Number); return makeUTC(Y,M-1,D); }
function addDaysUTC(d,n){ return makeUTC(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate()+n); }
function daysBetweenUTC(a,b){ const ms=24*60*60*1000; return Math.round((b - a)/ms); }
function fmtLong(d){ const local=new Date(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), 12,0,0); return local.toLocaleDateString('en-US',{weekday:'short',month:'short',day:'numeric',year:'numeric'}); }

/* Week data (concise, public-education ranges) */
const WEEK_DATA = {
  1:{fruit:"—", length:"—", weight:"—", mom:"Hormonal priming from LMP.", tips:"Begin prenatal vitamins with folic acid."},
  2:{fruit:"—", length:"—", weight:"—", mom:"Ovulation approaches.", tips:"Track cycle; avoid alcohol/smoking."},
  3:{fruit:"Poppy seed", length:"~0.1 mm (zygote)", weight:"~0 g", mom:"Fertilization & early cell division.", tips:"Keep taking folate."},
  4:{fruit:"Sesame seed", length:"~1–2 mm (embryo)", weight:"~0 g", mom:"Implantation; may miss period.", tips:"If positive test, book a visit."},
  5:{fruit:"Peppercorn", length:"~2–4 mm (CRL)", weight:"~0.1 g", mom:"Heart tube starts beating.", tips:"Start prenatal care schedule."},
  6:{fruit:"Sweet pea", length:"~5–7 mm (CRL)", weight:"~0.2 g", mom:"Limb buds, neural tube forming.", tips:"Manage nausea, rest well."},
  7:{fruit:"Blueberry", length:"~9–12 mm (CRL)", weight:"~0.4 g", mom:"Brain & facial features develop.", tips:"Small frequent meals help."},
  8:{fruit:"Raspberry", length:"~14–18 mm (CRL)", weight:"~1 g", mom:"Organs continue forming.", tips:"Avoid certain meds—ask your doctor."},
  9:{fruit:"Grape", length:"~22–25 mm (CRL)", weight:"~2 g", mom:"Tail disappears; joints form.", tips:"Hydration supports blood volume."},
 10:{fruit:"Kumquat", length:"~31–35 mm (CRL)", weight:"~4 g", mom:"Vital organs continue growth.", tips:"Consider first prenatal screening."},
 11:{fruit:"Fig", length:"~41–45 mm (CRL)", weight:"~7 g", mom:"External genitals start forming.", tips:"Balanced diet with iron."},
 12:{fruit:"Lime", length:"~53–58 mm (CRL)", weight:"~14 g", mom:"Reflexes, fingernails appear.", tips:"Discuss screening options."},
 13:{fruit:"Pea pod", length:"~7.4–8.0 cm (CH)", weight:"~23 g", mom:"Second trimester begins.", tips:"Energy may improve."},
 14:{fruit:"Lemon", length:"~8.5 cm", weight:"~43 g", mom:"Neck lengthens; facial muscles.", tips:"Light exercise if approved."},
 15:{fruit:"Apple", length:"~10 cm", weight:"~70 g", mom:"Bones harden; hair follicles.", tips:"Calcium & vitamin D."},
 16:{fruit:"Avocado", length:"~11.5 cm", weight:"~100 g", mom:"Muscle movements increase.", tips:"Consider anatomy scan timing."},
 17:{fruit:"Onion", length:"~13 cm", weight:"~140 g", mom:"Fat stores begin; stronger bones.", tips:"Manage back comfort & posture."},
 18:{fruit:"Bell pepper", length:"~14.2 cm", weight:"~190 g", mom:"Ears/eyes settle; myelin begins.", tips:"Feel first flutters (quickening)."},
 19:{fruit:"Mango", length:"~15.3 cm", weight:"~240 g", mom:"Vernix & lanugo develop.", tips:"Anomaly scan around 18–22 wks."},
 20:{fruit:"Banana", length:"~25 cm", weight:"~300 g", mom:"Halfway! Sucking & swallowing.", tips:"Discuss fetal movement patterns."},
 21:{fruit:"Carrot", length:"~26.7 cm", weight:"~360 g", mom:"Digestive system matures.", tips:"Watch posture; support pillows."},
 22:{fruit:"Spaghetti squash", length:"~27.8 cm", weight:"~430 g", mom:"Lips/eyelids distinct.", tips:"Note Braxton Hicks info."},
 23:{fruit:"Grapefruit", length:"~28.9 cm", weight:"~500 g", mom:"Lungs develop alveoli primordia.", tips:"Iron-rich foods + vitamin C."},
 24:{fruit:"Corn", length:"~30 cm", weight:"~600 g", mom:"Skin less translucent.", tips:"Know preterm labor signs."},
 25:{fruit:"Rutabaga", length:"~34.6 cm", weight:"~660 g", mom:"Balance & startle reflexes.", tips:"Hydrate; manage leg cramps."},
 26:{fruit:"Scallion", length:"~35.6 cm", weight:"~760 g", mom:"Eyes open/close; eyelashes.", tips:"Discuss glucose screening."},
 27:{fruit:"Cauliflower", length:"~36.6 cm", weight:"~875 g", mom:"Neural development continues.", tips:"Third trimester begins."},
 28:{fruit:"Aubergine", length:"~37.6 cm", weight:"~1000 g", mom:"REM sleep patterns.", tips:"Kick counts as advised."},
 29:{fruit:"Butternut squash", length:"~38.6 cm", weight:"~1150 g", mom:"Muscle tone improves.", tips:"Manage heartburn & sleep."},
 30:{fruit:"Cabbage", length:"~39.9 cm", weight:"~1310 g", mom:"Brain grooves deepen.", tips:"Birth class & hospital bag list."},
 31:{fruit:"Coconut", length:"~41.1 cm", weight:"~1500 g", mom:"Lungs mature further.", tips:"Discuss pediatrician choice."},
 32:{fruit:"Jicama", length:"~42.4 cm", weight:"~1700 g", mom:"Fat layers increase.", tips:"Plan maternity leave timing."},
 33:{fruit:"Pineapple", length:"~43.7 cm", weight:"~1910 g", mom:"Immune transfer (antibodies).", tips:"Watch swelling & blood pressure."},
 34:{fruit:"Cantaloupe", length:"~45 cm", weight:"~2140 g", mom:"Sleep-wake cycles clearer.", tips:"Practice labor breathing."},
 35:{fruit:"Honeydew", length:"~46.2 cm", weight:"~2380 g", mom:"Brain/lung maturation.", tips:"Know when to go to hospital."},
 36:{fruit:"Roma lettuce", length:"~47.4 cm", weight:"~2620 g", mom:"Position likely head-down.", tips:"Group B Strep test timeline."},
 37:{fruit:"Chard bunch", length:"~48.6 cm", weight:"~2850 g", mom:"Term (early term).", tips:"Finalize birth plan & car seat."},
 38:{fruit:"Pumpkin small", length:"~49.8 cm", weight:"~3080 g", mom:"Grasps firm; hair grows.", tips:"Rest; watch for labor signs."},
 39:{fruit:"Watermelon mini", length:"~50.7 cm", weight:"~3250 g", mom:"Full term.", tips:"Time contractions; stay hydrated."},
 40:{fruit:"Watermelon", length:"~51.2 cm", weight:"~3400 g", mom:"Ready for birth.", tips:"Follow your care team guidance."}
};

let currentWeek = 0; // 1..40
let lmpDate = null; // UTC Date
let eddDate = null; // UTC Date

const lmpWrap = document.getElementById('lmpWrap');
const eddWrap = document.getElementById('eddWrap');
const lmpInput = document.getElementById('lmpDate');
const eddInput = document.getElementById('eddDate');
const showBtn  = document.getElementById('showBtn');
const progShell= document.getElementById('progressShell');
const progFill = document.getElementById('progFill');
const progPct  = document.getElementById('progPct');
const navShell = document.getElementById('navShell');
const prevW    = document.getElementById('prevW');
const nextW    = document.getElementById('nextW');
const wkSelect = document.getElementById('wkSelect');
const results  = document.getElementById('results');
const actions  = document.getElementById('actions');
const showAllBtn = document.getElementById('showAllBtn');

/* Restore last inputs */
document.addEventListener('DOMContentLoaded', ()=>{
  const saved = JSON.parse(localStorage.getItem('pw_tracker_last')||'null');
  if(saved){
    if(saved.mode==='edd'){
      document.querySelector('input[name="mode"][value="edd"]').checked = true;
      lmpWrap.style.display='none'; eddWrap.style.display='block';
    }
    if(saved.lmp) lmpInput.value = saved.lmp;
    if(saved.edd) eddInput.value = saved.edd;
  }
});

/* Mode switch */
document.querySelectorAll('input[name="mode"]').forEach(r=>{
  r.addEventListener('change', ()=>{
    if(r.value==='lmp' && r.checked){ lmpWrap.style.display='block'; eddWrap.style.display='none'; }
    if(r.value==='edd' && r.checked){ lmpWrap.style.display='none'; eddWrap.style.display='block'; }
  });
});

/* Build week select */
(function(){
  let opts = `<option value="">Go to week…</option>`;
  for(let w=1; w<=40; w++){ opts += `<option value="${w}">Week ${w}</option>`; }
  wkSelect.innerHTML = opts;
})();

/* Calculate from inputs */
showBtn.addEventListener('click', ()=>{
  const mode = document.querySelector('input[name="mode"]:checked').value;
  const now = new Date();
  const today = makeUTC(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate());
  if(mode==='lmp'){
    if(!lmpInput.value) return alert('Please select your LMP date.');
    lmpDate = parseUTC(lmpInput.value);
    eddDate = addDaysUTC(lmpDate, 280); // Naegele
  }else{
    if(!eddInput.value) return alert('Please select your due date.');
    eddDate = parseUTC(eddInput.value);
    lmpDate = addDaysUTC(eddDate, -280);
  }

  // Save
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  // Gestational age today (weeks+days)
  const days = Math.max(0, Math.min(280, daysBetweenUTC(lmpDate, today)));
  const wk = Math.floor(days/7) + 1; // week numbers 1..40
  currentWeek = Math.max(1, Math.min(40, wk));

  renderAll();
});

/* Navigation */
prevW.addEventListener('click', ()=>{ if(currentWeek>1){ currentWeek--; renderAll(false);} });
nextW.addEventListener('click', ()=>{ if(currentWeek<40){ currentWeek++; renderAll(false);} });
wkSelect.addEventListener('change', ()=>{ const v=parseInt(wkSelect.value,10); if(!isNaN(v)){ currentWeek=v; renderAll(false);} });

showAllBtn.addEventListener('click', ()=> renderAll(true));

/* Render */
function renderAll(showAll=false){
  const pct = Math.round((currentWeek-1)/39 * 100);
  progPct.textContent = pct + '%';
  progFill.style.width = pct + '%';
  progShell.style.display = 'block';

  navShell.style.display = 'flex';
  prevW.disabled = currentWeek===1; nextW.disabled = currentWeek===40;
  wkSelect.value = String(currentWeek);

  results.innerHTML = '';
  actions.style.display = 'flex';

  if(showAll){
    const wrap = document.createElement('div'); wrap.className='allWrap';
    const grid = document.createElement('div'); grid.className='weekGrid'; wrap.appendChild(grid);
    for(let w=1; w<=40; w++){ grid.appendChild(buildWeekItem(w)); }
    results.appendChild(wrap);
  }else{
    results.appendChild(buildWeekCard(currentWeek));
  }
}

function buildWeekCard(w){
  const data = WEEK_DATA[w] || {};
  const card = document.createElement('section'); card.className='card';
  card.innerHTML = `
    <div class="cardHead">
      <div class="wkTitle">🌸 Week ${w} <span class="badge">Trimester ${triOf(w)}</span> <span class="badge">EDD: ${fmtLong(eddDate)}</span></div>
      <div class="meta">LMP: ${fmtLong(lmpDate)}</div>
    </div>
    <div class="grid">
      <div class="row"><div class="ico">🍓</div><div><h4>Baby’s Size</h4><div class="kv">${data.fruit||'—'}</div><div class="meta">Typical fruit comparison</div></div></div>
      <div class="row"><div class="ico" style="background:#0d47a1">📏</div><div><h4>Length</h4><div class="kv">${data.length||'—'}</div><div class="meta">CRL until ~wk13, then crown-heel</div></div></div>
      <div class="row"><div class="ico" style="background:#8a5a00">⚖️</div><div><h4>Weight</h4><div class="kv">${data.weight||'—'}</div><div class="meta">Approximate mid-week estimate</div></div></div>
      <div class="row"><div class="ico" style="background:#1b5e20">🤰</div><div><h4>Your Body</h4><p>${data.mom||'—'}</p></div></div>
      <div class="row"><div class="ico">💡</div><div><h4>Tips</h4><p>${data.tips||'—'}</p></div></div>
    </div>
    <p class="meta">Educational ranges only; consult your clinician for personalized care.</p>
  `;
  return card;
}

function buildWeekItem(w){
  const data = WEEK_DATA[w] || {};
  const sec = document.createElement('section'); sec.className='weekItem';
  sec.innerHTML = `
    <h3>Week ${w} <span class="badge">T${triOf(w)}</span></h3>
    <p><strong>Size:</strong> ${data.fruit||'—'} | <strong>Length:</strong> ${data.length||'—'} | <strong>Weight:</strong> ${data.weight||'—'}</p>
    <p><strong>Your body:</strong> ${data.mom||'—'}</p>
    <p><strong>Tips:</strong> ${data.tips||'—'}</p>
  `;
  return sec;
}

function triOf(w){ return (w<=13)?1: (w<=27)?2:3; }
</script>

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    {"@type":"Question","name":"How does the Pregnancy Week-by-Week Tracker calculate my week?","acceptedAnswer":{"@type":"Answer","text":"We compute gestational age from your LMP or by reversing from your EDD (40 weeks = 280 days). We use UTC dates to avoid timezone shifts."}},
    {"@type":"Question","name":"Are the size and weight exact?","acceptedAnswer":{"@type":"Answer","text":"No. They are mid-week educational estimates based on public references. Always follow your clinician’s guidance."}},
    {"@type":"Question","name":"Where can I read more?","acceptedAnswer":{"@type":"Answer","text":"See educational references from Mayo Clinic (fetal development week by week) and NHS Pregnancy Guide."}}
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}
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			</item>
		<item>
		<title>Implantation Calculator – Predict the Right Time to Test</title>
		<link>https://www.momwink.com/implantation-calculator/</link>
					<comments>https://www.momwink.com/implantation-calculator/#respond</comments>
		
		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Thu, 07 Aug 2025 12:48:56 +0000</pubDate>
				<category><![CDATA[Tools & Resources]]></category>
		<category><![CDATA[Trying to Conceive]]></category>
		<guid isPermaLink="false">https://momwink.com/?p=757</guid>

					<description><![CDATA[Implantation Calculator – Predict the Right Time to Test 🩷 Smart Implantation Calculator – Predict the Right Time to Test The Smart Implantation Calculator helps you answer the big question: when should I take a pregnancy test? By using your ovulation day, it estimates your likely implantation window and suggests optimal test dates, so you [&#8230;]]]></description>
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<title>Implantation Calculator – Predict the Right Time to Test</title>
<meta name="description" content="Implantation Calculator: estimate your implantation window and best test days with a clear mini calendar, science-based tips, and print-ready results.">
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<article itemscope itemtype="https://schema.org/Article">
  <meta itemprop="headline" content="Implantation Calculator – Predict the Right Time to Test">
  <meta itemprop="author" content="MomWink Editors">
  <meta itemprop="datePublished" content="2025-08-09">
  <meta itemprop="dateModified" content="2025-08-09">

  <h1>🩷 Smart <strong>Implantation Calculator</strong> – Predict the Right Time to Test</h1>

  <p>
    The Smart <strong>Implantation Calculator</strong> helps you answer the big question: <em>when should I take a pregnancy test?</em> By using your ovulation day, it estimates your likely <strong>implantation window</strong> and suggests optimal test dates, so you can avoid a <em>false negative pregnancy test</em> and reduce guesswork. You’ll see results in beautiful info cards and a <strong>mini calendar</strong>, with a print button for easy sharing. We also explain key concepts—like <em>luteal phase length</em>, <em>days past ovulation (DPO)</em>, and how <em>hCG levels after implantation</em> change—using simple, science-informed language.
  </p>

  <!-- Image for SEO -->
  <figure>
    <img decoding="async" src="/images/implantation-calculator.webp" width="1200" height="630" alt="Smart Implantation Calculator – Predict the Right Time to Test">
    <figcaption>Clear steps to estimate implantation and plan accurate test timing.</figcaption>
  </figure>

  <h2>📌 How to Use the <strong>Implantation Calculator</strong> (Step-by-Step)</h2>
  <p>
    Using the <strong>Implantation Calculator</strong> is straightforward:
  </p>
  <ol>
    <li>Select your <strong>day of ovulation</strong> (based on OPKs, basal body temperature, ultrasound, or reliable tracking).</li>
    <li>Click <em>Calculate</em> to see the estimated implantation window—most often <strong>6–10 days after ovulation</strong>—visualized on the calendar.</li>
    <li>Check the suggested testing dates; if your first test is negative, re-test after 48 hours.</li>
  </ol>
  <p>
    Not sure about ovulation? Estimate it first with our <a href="/ovulation-calculator">Smart Ovulation Calculator</a> (uses cycle length and <em>fertile window</em>), or cross-check your likely <em>conception date</em> with the <a href="/due-date-calculator">Due Date Calculator</a>. For ongoing guidance during pregnancy, try the <a href="/pregnancy-week-by-week-tracker">Pregnancy Week-by-Week Tracker</a>.
  </p>

  <h2>🧠 Why a Smart <strong>Implantation Calculator</strong> Really Helps</h2>
  <p>
    Implantation is when the fertilized egg attaches to the uterine lining. Only after implantation do <strong>hCG</strong> levels start rising enough to be detectable by an <em>early detection pregnancy test</em>. Testing before this point often returns a <em>false negative pregnancy test</em>, which can create confusion and stress. By translating biology into a practical timeline, the Smart <strong>Implantation Calculator</strong> shows when implantation is likely and when a home test is more reliable. Because <em>luteal phase length</em> can vary a little between people and cycles, treat the dates as best-fit estimates rather than exact promises.
  </p>

  <h3>Timing Essentials: Luteal Phase, DPO & hCG</h3>
  <p>
    Your luteal phase typically ranges around 12–14 days but may be slightly shorter or longer. Many users also track <strong>days past ovulation (DPO)</strong> to interpret symptoms and test timing. After implantation, <strong>hCG levels after implantation</strong> generally rise over 48–72 hours, which is why repeating a test within two days can make a difference.
  </p>

  <h2>📅 <strong>Implantation Calculator</strong> – Predict Your Test Timing</h2>
  <div class="imp-tool" role="region" aria-label="Implantation Calculator">
    <label for="ovulationDate">📍 Day of Ovulation</label>
    <input type="date" id="ovulationDate" />
    <button onclick="calculateImplantationWindow()">💖 Calculate My Implantation Window</button>

    <div id="impResultShell" style="display:none">
      <div id="impCards"></div>
      <div id="impCalendar" class="miniCal"></div>
      <button id="printButton" class="printBtn" style="display:none" onclick="window.print()">🖨️ Print My Results</button>
    </div>
  </div>

  <h2>🔍 When Should I Take a Pregnancy Test?</h2>
  <p>
    For the most accurate results, test about <strong>1–3 days after your estimated implantation</strong>. Use first-morning urine and follow the kit’s steps carefully. If you still suspect pregnancy after a negative, re-test in 48 hours—early pregnancy <em>hCG</em) often doubles in this window. These habits keep expectations realistic and minimize stress.
  </p>

  <h3>Early Pregnancy Symptoms & Implantation Signs</h3>
  <p>
    Some people notice <em>implantation signs</em>—light spotting, mild cramping, breast tenderness, or subtle temperature shifts—around the window. These can overlap with <em>early pregnancy symptoms</em> and even PMS, so consider them clues rather than proof. Only a properly timed test can confirm pregnancy.
  </p>

  <h2>📚 Trusted Resources & Related Tools</h2>
  <p>
    Learn more from <a href="https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20046151" rel="nofollow noopener" target="_blank">Mayo Clinic</a> and the
    <a href="https://www.nhs.uk/pregnancy/" rel="nofollow noopener" target="_blank">NHS Pregnancy Guide</a>. For timing your <em>fertile window</em> and planning tests, start with our
    <a href="/ovulation-calculator">Smart Ovulation Calculator</a>, check your <em>conception date</em> against the <a href="/due-date-calculator">Due Date Calculator</a>, and follow your journey using the
    <a href="/pregnancy-week-by-week-tracker">Pregnancy Week-by-Week Tracker</a>.
  </p>
</article>

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    <span class="tag"><span class="em">🩷</span>Implantation window</span>
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			</item>
		<item>
		<title>Smart Ovulation Calculator – 3 Accurate Cycles to Boost Your Chances</title>
		<link>https://www.momwink.com/ovulation-calculator/</link>
					<comments>https://www.momwink.com/ovulation-calculator/#respond</comments>
		
		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Thu, 07 Aug 2025 11:55:20 +0000</pubDate>
				<category><![CDATA[Tools & Resources]]></category>
		<category><![CDATA[Trying to Conceive]]></category>
		<guid isPermaLink="false">https://momwink.com/?p=741</guid>

					<description><![CDATA[Smart Ovulation Calculator – Plan 3 Cycles &#038; Boost Your Chances 🩷 Smart Ovulation Calculator – Plan Your Pregnancy Naturally Get a clear 3-cycle forecast of your fertile window, ovulation day, next period and a potential due date. Now with daily conception probabilities, an overall chance indicator, and best days to conceive. 📌 How to [&#8230;]]]></description>
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					<!-- ===== SEO META ===== -->
<title>Smart Ovulation Calculator – Plan 3 Cycles & Boost Your Chances</title>
<meta name="description" content="Use our smart Ovulation Calculator to forecast your next 3 cycles: fertile window, ovulation day, next period and potential due date — plus daily conception probabilities and best days to conceive. Accurate, clear and printable.">
<link rel="canonical" href="https://momwink.com/ovulation-calculator" />

<article>
  <h1>🩷 Smart Ovulation Calculator – Plan Your Pregnancy Naturally</h1>
  <p>
    Get a clear 3-cycle forecast of your <strong>fertile window</strong>, <strong>ovulation day</strong>, <strong>next period</strong> and a <strong>potential due date</strong>. 
    Now with <strong>daily conception probabilities</strong>, an <strong>overall chance indicator</strong>, and <strong>best days to conceive</strong>.
  </p>

  <h2>📌 How to Use This Ovulation Calculator</h2>
  <ol>
    <li>Select the first day of your last period.</li>
    <li>Choose your average cycle length (20–44 days) and period length.</li>
    <li>Click the button to see your 3-cycle forecast. You can print the results.</li>
  </ol>

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    <label for="startDate">📅 First Day of Last Period</label>
    <input type="date" id="startDate" />

    <label for="cycleLength">🔁 Average Cycle Length</label>
    <select id="cycleLength" aria-label="Average Cycle Length">
      <option value="">-- Select --</option>
      <option>20</option><option>21</option><option>22</option><option>23</option><option>24</option>
      <option>25</option><option>26</option><option>27</option><option selected>28</option><option>29</option>
      <option>30</option><option>31</option><option>32</option><option>33</option><option>34</option>
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    </select>

    <label for="periodLen">🩸 Period Length (days)</label>
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      <option>2</option><option>3</option><option>4</option>
      <option selected>5</option>
      <option>6</option><option>7</option><option>8</option><option>9</option><option>10</option>
    </select>

    <button onclick="generateForecast()">💖 Show My Fertility Forecast</button>

    <!-- hidden until calculated -->
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      </div>

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      <button id="printBtn" class="printBtn" onclick="window.print()" style="display:none">🖨️ Print Results</button>
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  </div>

  <h2>📚 Related Guides</h2>
  <ul>
    <li><a href="/how-to-track-ovulation">How to Track Ovulation Accurately</a></li>
    <li><a href="/foods-that-boost-fertility">Top Foods That Boost Fertility</a></li>
    <li><a href="/sperm-health-fertility">Sperm Health Matters: Tips for Partners</a></li>
    <li><a href="/due-date-calculator">Due Date Calculator – Estimate in 4 Easy Steps</a></li>
  </ul>

  <h2>❓ FAQ</h2>
  <dl>
    <dt><strong>Can I use this if my cycles are irregular?</strong></dt>
    <dd>Use your best average. For very irregular cycles, pair this with ovulation tests or basal body temperature tracking.</dd>

    <dt><strong>Is the ovulation date exact?</strong></dt>
    <dd>It’s an estimate based on averages. Real ovulation can shift slightly from cycle to cycle.</dd>

    <dt><strong>What does the overall chance indicator mean?</strong></dt>
    <dd>It’s a general guide (High/Moderate/Lower) based on cycle & period length ranges. It’s not a diagnosis.</dd>
  </dl>
</article>

<!-- ===== STYLES ===== -->
<style>
:root{
  --pink:#d63384; --pink-2:#9c1b63; --rose:#ff6e90; --rose-2:#ffe6ec;
  --green:#1b5e20; --mint:#e6fff3; --mint-b:#89e3aa;
  --blue:#0d47a1; --blue-2:#90caf9; --ice:#e8f0ff;
  --gold:#8a5a00; --gold-b:#ffd89a; --paper:#fff7e6;
  --gray:#555;
}
.ov-tool{
  background:linear-gradient(90deg,#ffe0f0,#e0f7fa);
  padding:28px;border-radius:16px;box-shadow:0 6px 16px rgba(0,0,0,.08);
  max-width:860px;margin:22px auto;font-family:'Segoe UI',sans-serif;text-align:center
}
.ov-tool label{display:block;margin-top:14px;font-weight:700;text-align:left}
.ov-tool input,.ov-tool select{width:100%;padding:5px;font-size:16px;border:2px solid var(--pink);border-radius:10px;margin-top:6px;background:#fff}
.ov-tool button{margin-top:16px;padding:12px 20px;background:var(--pink);color:#fff;border:none;border-radius:999px;font-size:16px;cursor:pointer}
.ov-tool button:hover{background:#b81f70}

/* nav */
.navbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:18px 0 6px}
.navbtn{background:#fff;border:2px solid var(--pink);color:var(--pink);border-radius:999px;padding:8px 14px;cursor:pointer;min-width:110px}
.navbtn:disabled{opacity:.5;cursor:not-allowed}
.cycleIndicator{font-weight:800;color:var(--pink-2)}

/* cycle card */
.cycle-card{background:#fff;border-radius:18px;padding:16px;box-shadow:0 10px 22px rgba(0,0,0,.06)}
.cycle-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.cycle-title{font-weight:800;color:var(--pink-2)}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;margin-left:6px}
.badge-period{background:#ffe6ec;border:1px solid #f48fb1;color:#c2185b}
.badge-fertile{background:var(--mint);border:1px solid var(--mint-b);color:var(--green)}
.badge-ov{background:#e8f0ff;border:1px solid var(--blue-2);color:#0d47a1}
.badge-due{background:var(--paper);border:1px solid var(--gold-b);color:#8a5a00}
.items{display:grid;gap:12px}
@media(min-width:720px){.items{grid-template-columns:1fr 1fr}}
.item{display:flex;gap:12px;align-items:flex-start;background:#fafafa;border-radius:14px;padding:12px}
.ico{flex:0 0 42px;height:42px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:20px;background:var(--pink)}
.item h4{margin:0 0 4px;color:var(--pink-2)}
.pill{display:inline-block;margin-top:6px;padding:6px 10px;border-radius:999px;font-size:13px}
.pill-range{background:#fff0f6;border:1px solid #f8bbd0;color:#8e0038}
.pill-date{background:#e8f0ff;border:1px solid var(--blue-2);color:#0d47a1}
.pill-next{background:#ffe6ec;border:1px solid #f48fb1;color:#c2185b}
.pill-due{background:var(--paper);border:1px solid var(--gold-b);color:#8a5a00}
.printBtn{margin-top:12px;background:var(--pink-2);color:#fff;border:none;border-radius:999px;padding:10px 18px;cursor:pointer}

/* mini calendar */
.miniCal{margin-top:12px;background:#fff;border-radius:22px;padding:16px;box-shadow:0 10px 22px rgba(0,0,0,.06)}
.mc-head{display:flex;justify-content:space-between;align-items:center;font-weight:800;color:#4a4a4a;margin:2px 6px 12px}
.mc-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;text-align:center}
.mc-grid .dow{font-weight:700;color:#8c8c8c}
.mc-cell{background:#f6f7f9;border-radius:16px;min-height:54px;padding:6px 0;position:relative;color:#444;
  font-weight:600;display:grid;place-items:center;transition:.15s}
.mc-cell:hover{box-shadow:0 4px 10px rgba(0,0,0,.06);transform:translateY(-1px)}
.mc-muted{opacity:.35}

/* period bubble */
.period{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(180deg,#ff9db3,#ff6e90);color:#fff;font-weight:800}

/* fertile band */
.fertile{background:#ecfff4;border:2px solid var(--mint-b)}
.fertile-start{border-top-left-radius:18px;border-bottom-left-radius:18px}
.fertile-mid{border-radius:10px}
.fertile-end{border-top-right-radius:18px;border-bottom-right-radius:18px}

/* ovulation icon */
.ovIcon{position:absolute;right:6px;bottom:6px;font-size:18px;background:#ffe9a8;border-radius:50%;width:26px;height:26px;
  display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,.15)}

.mc-legend{display:flex;gap:12px;justify-content:center;margin-top:12px;flex-wrap:wrap}
.tag{background:#fff;border:1px solid #ececec;padding:8px 14px;border-radius:999px;font-weight:600;color:#555}
.tag .em{margin-inline-end:8px}

/* === Probability panel === */
.probCard{margin-top:16px;background:#fff;border-radius:18px;padding:16px;box-shadow:0 10px 22px rgba(0,0,0,.06)}
.probHead{font-weight:800;color:var(--pink-2);margin-bottom:8px}
.probRow{display:flex;align-items:center;gap:10px;margin:8px 0}
.probDate{min-width:160px;font-weight:600;color:#333}
.bar{flex:1;background:#f1f1f5;border-radius:999px;overflow:hidden;height:12px;position:relative}
.barFill{height:100%;background:linear-gradient(90deg,#89e3aa,#1b5e20)}
.probPct{min-width:54px;text-align:right;font-weight:700;color:#1b5e20}

/* overall chip */
.overall{display:inline-block;margin-top:6px;padding:6px 12px;border-radius:999px;font-weight:700}
.over-high{background:#e8fce8;color:#1b5e20;border:1px solid #89e3aa}
.over-mod{background:#fff7e6;color:#8a5a00;border:1px solid #ffd89a}
.over-low{background:#ffe6ec;color:#c2185b;border:1px solid #f48fb1}

/* === Best days to conceive === */
.bestDays{margin-top:14px;background:#fff;border-radius:14px;padding:14px;box-shadow:0 8px 18px rgba(0,0,0,.05)}
.bestHead{font-weight:800;color:#9c1b63;margin-bottom:8px}
.bestRow{display:flex;align-items:center;gap:10px;margin:8px 0}
.bestDate{min-width:180px;font-weight:600;color:#333}
.chip{display:inline-block;padding:4px 10px;border-radius:999px;font-weight:700;font-size:12px}
.chip-high{background:#e8fce8;color:#1b5e20;border:1px solid #89e3aa}
.chip-mod{background:#fff7e6;color:#8a5a00;border:1px solid #ffd89a}
.chip-low{background:#ffe6ec;color:#c2185b;border:1px solid #f48fb1}

@media print{ .ov-tool button{display:none} }
</style>

<!-- ===== SCRIPTS (UTC, no shift) ===== -->
<script>
let cyclesData = [];
let currentIndex = 0;

/* UTC helpers to avoid timezone/daylight shift */
function makeUTC(y,m,d){ return new Date(Date.UTC(y,m,d,12,0,0)); } // noon UTC
function parseUTC(s){ const [Y,M,D]=s.split('-').map(Number); return makeUTC(Y,M-1,D); }
function addDaysUTC(d,n){ return makeUTC(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate()+n); }
function isoUTC(d){ const y=d.getUTCFullYear(), m=String(d.getUTCMonth()+1).padStart(2,'0'), day=String(d.getUTCDate()).padStart(2,'0'); return `${y}-${m}-${day}`; }
function fmtLong(d){ const local=new Date(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), 12,0,0); return local.toLocaleDateString('en-US',{weekday:'short',month:'short',day:'numeric',year:'numeric'}); }
function rangeDays(start,len){ const out=[]; for(let i=0;i<len;i++){ out.push(addDaysUTC(start,i)); } return out; }

/* Probability model (indicative, literature-inspired) */
const PROB_MAP = { "-5":10, "-4":12, "-3":18, "-2":27, "-1":30, "0":33, "1":10 }; // %
function getDailyProbs(ovulationDate){
  const rows=[];
  for(const k of [-5,-4,-3,-2,-1,0,1]){
    const date = addDaysUTC(ovulationDate, k);
    rows.push({date, pct: PROB_MAP[String(k)]});
  }
  return rows;
}
function overallChanceLabel(cycleLen, periodLen){
  if(cycleLen>=26 && cycleLen<=30 && periodLen>=3 && periodLen<=6) return {label:"High", cls:"over-high"};
  if(cycleLen>=24 && cycleLen<=35) return {label:"Moderate", cls:"over-mod"};
  return {label:"Lower", cls:"over-low"};
}
/* chip class for best days */
function pctChipClass(p){
  if(p >= 25) return {cls:'chip-high', label:'High'};
  if(p >= 15) return {cls:'chip-mod', label:'Moderate'};
  return {cls:'chip-low', label:'Lower'};
}

/* Build three cycles */
function generateForecast(){
  const startDateInput = document.getElementById("startDate").value;
  const cycleLength = parseInt(document.getElementById("cycleLength").value,10);
  const periodLen   = parseInt(document.getElementById("periodLen").value,10);
  if(!startDateInput || isNaN(cycleLength) || isNaN(periodLen)){
    alert("Please select a valid date, cycle length, and period length."); return;
  }

  const start0 = parseUTC(startDateInput);
  cyclesData = [];

  for(let i=0;i<3;i++){
    const start = addDaysUTC(start0, i*cycleLength);
    const ovulation    = addDaysUTC(start, cycleLength - 14);
    const fertileStart = addDaysUTC(ovulation, -5);
    const fertileEnd   = addDaysUTC(ovulation, 0);
    const nextPeriod   = addDaysUTC(start, cycleLength);
    const dueDate      = addDaysUTC(ovulation, 280);

    const periodSet    = new Set(rangeDays(start, periodLen).map(isoUTC));
    const fertileSet   = new Set(rangeDays(fertileStart, 6).map(isoUTC)); // 5 before + ovulation day
    const ovulationSet = new Set([ isoUTC(ovulation) ]);

    cyclesData.push({
      start, fertileStart, fertileEnd, ovulation, nextPeriod, dueDate,
      monthOfCalendar: makeUTC(ovulation.getUTCFullYear(), ovulation.getUTCMonth(), 1),
      sets: {periodSet, fertileSet, ovulationSet},
      periodLen, cycleLength
    });
  }

  currentIndex = 0;
  document.getElementById("resultsShell").style.display = "block";
  document.getElementById("printBtn").style.display = "inline-block";
  updateNavButtons();
  renderCurrentCycle();
}

/* Render one cycle + mini calendar + probability + best days */
function renderCurrentCycle(){
  const data = cyclesData[currentIndex];
  const container = document.getElementById("resultsContainer");
  container.innerHTML = "";
  document.getElementById("cycleIndicator").textContent = `Cycle ${currentIndex+1} / ${cyclesData.length}`;

  const card = document.createElement("section");
  card.className="cycle-card";
  card.innerHTML = `
    <div class="cycle-head">
      <div class="cycle-title">🌸 Cycle ${currentIndex+1}</div>
      <div>
        <span class="badge badge-period">🩸 Period (${data.periodLen}d)</span>
        <span class="badge badge-fertile">🌼 Fertile</span>
        <span class="badge badge-ov">👶 Ovulation</span>
        <span class="badge badge-due">🍼 Due</span>
      </div>
    </div>
    <div class="items">
      <div class="item"><div class="ico">🩸</div><div><h4>Period Start</h4><span class="pill pill-next">${fmtLong(data.start)}</span></div></div>
      <div class="item"><div class="ico" style="background:#1b5e20">🌼</div><div><h4>Fertile Window</h4><span class="pill pill-range">${fmtLong(data.fertileStart)} – ${fmtLong(data.fertileEnd)}</span></div></div>
      <div class="item"><div class="ico" style="background:#0d47a1">👶</div><div><h4>Ovulation Day</h4><span class="pill pill-date">${fmtLong(data.ovulation)}</span></div></div>
      <div class="item"><div class="ico">📅</div><div><h4>Next Period</h4><span class="pill pill-next">${fmtLong(data.nextPeriod)}</span></div></div>
      <div class="item"><div class="ico" style="background:#8a5a00">🍼</div><div><h4>Estimated Due Date (if pregnant)</h4><span class="pill pill-due">${fmtLong(data.dueDate)}</span></div></div>
    </div>
  `;
  container.appendChild(card);

  /* Probability card */
  const pWrap = document.createElement('div');
  pWrap.className = 'probCard';
  const rows = getDailyProbs(data.ovulation);
  const overall = overallChanceLabel(data.cycleLength, data.periodLen);
  pWrap.innerHTML = `<div class="probHead">🎯 Daily Conception Probability (this cycle) 
    <span class="overall ${overall.cls}" title="General guide based on cycle & period length">Overall: ${overall.label}</span></div>`;
  rows.forEach(r=>{
    const row = document.createElement('div'); row.className='probRow';
    const pct = r.pct; const width = Math.max(6, Math.min(100, pct));
    row.innerHTML = `
      <div class="probDate">${fmtLong(r.date)}</div>
      <div class="bar"><div class="barFill" style="width:${width}%"></div></div>
      <div class="probPct">${pct}%</div>`;
    pWrap.appendChild(row);
  });
  const note = document.createElement('div');
  note.style.color='var(--gray)';
  note.style.fontSize='13px';
  note.style.marginTop='6px';
  note.innerHTML = `Note: Percentages are indicative based on typical research averages. Actual chances vary.`;
  pWrap.appendChild(note);
  card.appendChild(pWrap);

  /* Best days to conceive (with probability) */
  const best = document.createElement('div');
  best.className = 'bestDays';
  best.innerHTML = `<div class="bestHead">💡 Best Days to Conceive (this cycle)</div>`;
  const topRows = rows.filter(r => r.pct >= 12).sort((a,b) => b.pct - a.pct);
  if(topRows.length === 0){
    const empty = document.createElement('div');
    empty.style.color = '#555'; empty.style.fontSize = '13px';
    empty.textContent = 'No standout days this cycle based on averages.';
    best.appendChild(empty);
  } else {
    topRows.forEach(r=>{
      const meta = pctChipClass(r.pct);
      const row = document.createElement('div');
      row.className = 'bestRow';
      row.innerHTML = `
        <div class="bestDate">${fmtLong(r.date)}</div>
        <div class="chip ${meta.cls}" title="Estimated likelihood">${meta.label}</div>
        <div style="margin-left:auto;font-weight:700;color:#1b5e20">${r.pct}%</div>
      `;
      best.appendChild(row);
    });
  }
  const note2 = document.createElement('div');
  note2.style.color = '#555'; note2.style.fontSize = '12.5px'; note2.style.marginTop = '6px';
  note2.innerHTML = `These are estimated probabilities across the fertile window (5 days before ovulation through ovulation day).`;
  best.appendChild(note2);
  card.appendChild(best);

  /* Mini calendar */
  const mini = document.createElement('div'); mini.className='miniCal'; card.appendChild(mini);
  renderMiniCalendar(mini, data.monthOfCalendar, data.sets);
}

/* Mini calendar */
function renderMiniCalendar(container, monthDate, sets){
  const first = makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth(), 1);
  const daysInMonth = new Date(Date.UTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, 0)).getUTCDate();
  const startWd = first.getUTCDay();

  const head = document.createElement('div');
  head.className='mc-head';
  head.innerHTML = `<span>${new Date(first.getUTCFullYear(), first.getUTCMonth(), 1).toLocaleString('en-US',{month:'long',year:'numeric'})}</span>`;
  container.appendChild(head);

  const grid = document.createElement('div');
  grid.className='mc-grid';
  grid.innerHTML = `<div class="dow">Sun</div><div class="dow">Mon</div><div class="dow">Tue</div><div class="dow">Wed</div><div class="dow">Thu</div><div class="dow">Fri</div><div class="dow">Sat</div>`;
  container.appendChild(grid);

  for(let i=0;i<startWd;i++){
    const d = addDaysUTC(first, -(startWd-i));
    grid.appendChild(makeCell(d,true,sets));
  }
  for(let d=1; d<=daysInMonth; d++){
    grid.appendChild(makeCell(makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth(), d), false, sets));
  }
  while(grid.children.length%7!==0){
    const d = makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, (grid.children.length%7)+1);
    grid.appendChild(makeCell(d,true,sets));
  }

  const leg = document.createElement('div');
  leg.className='mc-legend';
  leg.innerHTML = `
    <span class="tag"><span class="em">🩸</span>Period</span>
    <span class="tag"><span class="em">🌼</span>Fertile window</span>
    <span class="tag"><span class="em">👶</span>Ovulation</span>`;
  container.appendChild(leg);
}
function makeCell(date, muted, sets){
  const key = isoUTC(date);
  const cell = document.createElement('div');
  cell.className = 'mc-cell' + (muted?' mc-muted':'');
  const dayNum = date.getUTCDate();

  const isPeriod  = sets.periodSet.has(key);
  const isFertile = sets.fertileSet.has(key);
  const isOvu     = sets.ovulationSet.has(key);

  if(isPeriod){ cell.innerHTML = `<div class="period">${dayNum}</div>`; }
  else { cell.textContent = dayNum; }

  if(isFertile){
    cell.classList.add('fertile');
    const inPrev = sets.fertileSet.has(isoUTC(addDaysUTC(date,-1)));
    const inNext = sets.fertileSet.has(isoUTC(addDaysUTC(date, 1)));
    if(!inPrev &&  inNext) cell.classList.add('fertile-start');
    else if(inPrev && inNext) cell.classList.add('fertile-mid');
    else if(inPrev && !inNext) cell.classList.add('fertile-end');
    else cell.classList.add('fertile-mid');
  }

  if(isOvu){
    const b = document.createElement('span');
    b.className = 'ovIcon';
    b.textContent = '👶';
    cell.appendChild(b);
  }
  return cell;
}

/* Prev / Next */
document.addEventListener('click', (e)=>{
  if(e.target.id==='nextBtn' && currentIndex < cyclesData.length-1){ currentIndex++; updateNavButtons(); renderCurrentCycle(); }
  if(e.target.id==='prevBtn' && currentIndex > 0){ currentIndex--; updateNavButtons(); renderCurrentCycle(); }
});
function updateNavButtons(){
  document.getElementById('prevBtn').disabled = currentIndex===0;
  document.getElementById('nextBtn').disabled = currentIndex===cyclesData.length-1;
}
</script>

<!-- ===== FAQ SCHEMA (SEO) ===== -->
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {"@type":"Question","name":"Can I use this if my cycles are irregular?","acceptedAnswer":{"@type":"Answer","text":"Use your best average. For very irregular cycles, pair this with ovulation tests or basal body temperature tracking."}},
    {"@type":"Question","name":"Is the ovulation date exact?","acceptedAnswer":{"@type":"Answer","text":"It’s an estimate based on averages. Real ovulation can shift slightly from cycle to cycle."}},
    {"@type":"Question","name":"What does the overall chance indicator mean?","acceptedAnswer":{"@type":"Answer","text":"It’s a general guide (High/Moderate/Lower) derived from cycle length and period length ranges. It is not a diagnosis."}}
  ]
}
</script>
				</div>
					</div>
				</div>
				</div>
		]]></content:encoded>
					
					<wfw:commentRss>https://www.momwink.com/ovulation-calculator/feed/</wfw:commentRss>
			<slash:comments>0</slash:comments>
		
		
			</item>
		<item>
		<title>Due Date Calculator – 4 Simple Steps to Estimate Your Pregnancy</title>
		<link>https://www.momwink.com/due-date-calculator/</link>
					<comments>https://www.momwink.com/due-date-calculator/#respond</comments>
		
		<dc:creator><![CDATA[eladouzi]]></dc:creator>
		<pubDate>Wed, 06 Aug 2025 22:09:44 +0000</pubDate>
				<category><![CDATA[Tools & Resources]]></category>
		<category><![CDATA[Pregnancy]]></category>
		<guid isPermaLink="false">https://momwink.com/?p=672</guid>

					<description><![CDATA[Due Date Calculator – Free &#038; Accurate Pregnancy Estimator 🎀 Due Date Calculator Trying to figure out your baby due date? This free, accurate estimator uses your last period and cycle length to calculate your estimated due date (EDD), current week, trimester, and days remaining — plus a mini calendar highlighting the big day. 📅 [&#8230;]]]></description>
										<content:encoded><![CDATA[		<div data-elementor-type="wp-post" data-elementor-id="672" class="elementor elementor-672" data-elementor-post-type="post">
				<div class="elementor-element elementor-element-ad4fd93 e-flex e-con-boxed e-con e-parent" data-id="ad4fd93" data-element_type="container">
					<div class="e-con-inner">
				<div class="elementor-element elementor-element-7e37466 elementor-widget elementor-widget-html" data-id="7e37466" data-element_type="widget" data-widget_type="html.default">
					<!-- ===== SEO META ===== -->
<title>Due Date Calculator – Free & Accurate Pregnancy Estimator</title>
<meta name="description" content="Use our free due date calculator to estimate your baby's arrival. Enter the first day of your last period and cycle length — get your due date, current week, trimester and a calendar preview.">
<link rel="canonical" href="https://momwink.com/due-date-calculator" />

<!-- ===== START: DUE DATE CALCULATOR ===== -->
<article>
  <h1>🎀 Due Date Calculator</h1>
  <p>
    Trying to figure out your <strong>baby due date</strong>? This free, accurate estimator uses your last period and cycle length to calculate your <strong>estimated due date (EDD)</strong>, <strong>current week</strong>, <strong>trimester</strong>, and <strong>days remaining</strong> — plus a mini calendar highlighting the big day.
  </p>

  <div class="ddc-tool" role="region" aria-label="Due Date Calculator">
    <label for="lastPeriod">📅 First Day of Your Last Period</label>
    <input type="date" id="lastPeriod" />

    <label for="cycleLength">🔁 Cycle Length (in days)</label>
    <select id="cycleLength" aria-label="Cycle Length">
      <option value="" disabled selected>-- Select --</option>
      <option>22</option><option>23</option><option>24</option><option>25</option><option>26</option><option>27</option>
      <option selected>28</option>
      <option>29</option><option>30</option><option>31</option><option>32</option><option>33</option><option>34</option>
      <option>35</option><option>36</option><option>37</option><option>38</option><option>39</option><option>40</option>
      <option>41</option><option>42</option><option>43</option><option>44</option>
    </select>

    <button onclick="calculateDueDate()">💖 Calculate My Due Date</button>

    <!-- results shell hidden until calculated -->
    <div id="ddcResults" style="display:none">
      <div id="ddcCards"></div>
      <div id="ddcCalendar" class="miniCal"></div>
      <div class="ddc-note" id="ddcNote" style="display:none">
        📌 <em>This is an estimate. Most babies are born between 38–42 weeks.</em>
      </div>
      <button id="printBtn" class="printBtn" style="display:none" onclick="window.print()">🖨️ Print Results</button>
    </div>
  </div>

  <h2>🧠 How This Due Date Calculator Works (Step-by-Step)</h2>
  <p>
    We estimate your due date by adding <strong>280 days (40 weeks)</strong> to the first day of your last menstrual period (LMP). If your cycle is longer or shorter than 28 days, we adjust using <em>(cycle length − 28)</em>. We also estimate your current week, trimester, and days remaining.
  </p>

  <h2>📆 What You Get</h2>
  <ul>
    <li><strong>Estimated Due Date (EDD)</strong></li>
    <li><strong>Current Gestational Week</strong> &amp; <strong>Trimester</strong></li>
    <li><strong>Days Remaining</strong> until your EDD</li>
    <li><strong>Mini Calendar</strong> highlighting your EDD</li>
  </ul>

  <h2>🔍 Related Tools & Articles</h2>
  <ul>
    <li><a href="/first-trimester-pregnancy-tips">Top 10 First Trimester Pregnancy Tips</a></li>
    <li><a href="/essential-nutrients-during-pregnancy">Essential Nutrients During Pregnancy</a></li>
    <li><a href="https://momwink.com/pregnancy-week-4/" target="_blank" rel="noopener">Pregnancy Week 4: What to Expect</a></li>
    <li><a href="/ovulation-calculator">Smart Ovulation Calculator – Plan Over 3 Cycles</a></li>
  </ul>

  <h2>🍼 Ready to Start Your Pregnancy Journey?</h2>
  <p>
    Save this page or share it with a friend! You’ll find more helpful tools on <strong>MomWink</strong> to support you every step of the way.
  </p>
</article>

<!-- ===== STYLES (brand-matched) ===== -->
<style>
:root{
  --pink:#d63384; --pink-2:#9c1b63; --rose:#ff6e90; --rose-2:#ffe6ec;
  --blue:#0d47a1; --blue-2:#90caf9; --ice:#e8f0ff;
  --gold:#8a5a00; --gold-b:#ffd89a; --paper:#fff7e6; --gray:#555;
}
.ddc-tool{
  background:linear-gradient(90deg,#ffe8f1,#e0f7fa);
  padding:28px;border-radius:16px;box-shadow:0 6px 16px rgba(0,0,0,.08);
  max-width:860px;margin:22px auto;font-family:'Segoe UI',sans-serif;text-align:center;color:#333
}
.ddc-tool label{display:block;margin-top:14px;font-weight:700;text-align:left}
.ddc-tool input,.ddc-tool select{width:100%;padding:5px;font-size:16px;border:2px solid var(--pink);border-radius:10px;margin-top:6px;background:#fff}
.ddc-tool button{margin-top:16px;padding:12px 20px;background:var(--pink);color:#fff;border:none;border-radius:999px;font-size:16px;cursor:pointer}
.ddc-tool button:hover{background:#b81f70}
.printBtn{margin-top:12px;background:var(--pink-2);color:#fff;border:none;border-radius:999px;padding:10px 18px;cursor:pointer}
.ddc-note{margin-top:12px;color:#555}

/* Cards */
.cards{display:grid;gap:12px}
@media(min-width:720px){.cards{grid-template-columns:1fr 1fr}}
.card{
  display:flex;gap:12px;align-items:flex-start;background:#fff;border-radius:14px;padding:14px;
  box-shadow:0 8px 18px rgba(0,0,0,.06)
}
.ico{
  flex:0 0 42px;height:42px;border-radius:50%;display:grid;place-items:center;font-size:20px;color:#fff;background:var(--pink)
}
.card h4{margin:0 0 4px;color:var(--pink-2)}
.pill{display:inline-block;margin-top:6px;padding:6px 10px;border-radius:999px;font-size:13px}
.pill-edd{background:#e8f0ff;border:1px solid var(--blue-2);color:#0d47a1}
.pill-week{background:#fff0f6;border:1px solid #f8bbd0;color:#8e0038}
.pill-tri{background:#fff7e6;border:1px solid var(--gold-b);color:#8a5a00}
.pill-left{background:#ffe6ec;border:1px solid #f48fb1;color:#c2185b}

/* Mini calendar (EDD highlight) */
.miniCal{margin-top:16px;background:#fff;border-radius:22px;padding:16px;box-shadow:0 10px 22px rgba(0,0,0,.06)}
.mc-head{display:flex;justify-content:space-between;align-items:center;font-weight:800;color:#4a4a4a;margin:2px 6px 12px}
.mc-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:10px;text-align:center}
.mc-grid .dow{font-weight:700;color:#8c8c8c}
.mc-cell{background:#f6f7f9;border-radius:16px;min-height:54px;padding:6px 0;position:relative;color:#444;
  font-weight:600;display:grid;place-items:center;transition:.15s}
.mc-cell:hover{box-shadow:0 4px 10px rgba(0,0,0,.06);transform:translateY(-1px)}
.mc-muted{opacity:.35}
.eddIcon{position:absolute;right:6px;bottom:6px;font-size:18px;background:#ffe9a8;border-radius:50%;width:26px;height:26px;
  display:grid;place-items:center;box-shadow:0 2px 6px rgba(0,0,0,.15)}
.mc-legend{display:flex;gap:12px;justify-content:center;margin-top:12px;flex-wrap:wrap}
.tag{background:#fff;border:1px solid #ececec;padding:8px 14px;border-radius:999px;font-weight:600;color:#555}
.tag .em{margin-inline-end:8px}

@media print{ .ddc-tool button{display:none} }
</style>

<!-- ===== SCRIPTS (UTC-safe) ===== -->
<script>
/* UTC helpers to avoid timezone/daylight shift */
function makeUTC(y,m,d){ return new Date(Date.UTC(y,m,d,12,0,0)); } // noon UTC = stable
function parseUTC(s){ const [Y,M,D]=s.split('-').map(Number); return makeUTC(Y,M-1,D); }
function addDaysUTC(d,n){ return makeUTC(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate()+n); }
function fmtLong(d){ const local=new Date(d.getUTCFullYear(), d.getUTCMonth(), d.getUTCDate(), 12,0,0); return local.toLocaleDateString('en-US',{weekday:'short',month:'short',day:'numeric',year:'numeric'}); }
function isoUTC(d){ const y=d.getUTCFullYear(), m=String(d.getUTCMonth()+1).padStart(2,'0'), day=String(d.getUTCDate()).padStart(2,'0'); return `${y}-${m}-${day}`; }

/* Mini calendar render */
function renderEDDCalendar(container, edd){
  const monthDate = makeUTC(edd.getUTCFullYear(), edd.getUTCMonth(), 1);
  const first = monthDate;
  const daysInMonth = new Date(Date.UTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, 0)).getUTCDate();
  const startWd = first.getUTCDay();

  container.innerHTML = '';
  const head = document.createElement('div');
  head.className='mc-head';
  head.innerHTML = `<span>${new Date(first.getUTCFullYear(), first.getUTCMonth(), 1).toLocaleString('en-US',{month:'long',year:'numeric'})}</span>`;
  container.appendChild(head);

  const grid = document.createElement('div');
  grid.className='mc-grid';
  grid.innerHTML = `<div class="dow">Sun</div><div class="dow">Mon</div><div class="dow">Tue</div><div class="dow">Wed</div><div class="dow">Thu</div><div class="dow">Fri</div><div class="dow">Sat</div>`;
  container.appendChild(grid);

  // prev padding
  for(let i=0;i<startWd;i++){
    const d = addDaysUTC(first, -(startWd-i));
    grid.appendChild(makeCell(d,true,edd));
  }
  // month days
  for(let d=1; d<=daysInMonth; d++){
    grid.appendChild(makeCell(makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth(), d), false, edd));
  }
  // next padding
  while(grid.children.length%7!==0){
    const d = makeUTC(monthDate.getUTCFullYear(), monthDate.getUTCMonth()+1, (grid.children.length%7)+1);
    grid.appendChild(makeCell(d,true,edd));
  }

  const leg = document.createElement('div');
  leg.className='mc-legend';
  leg.innerHTML = `<span class="tag"><span class="em">🍼</span>Estimated due date</span>`;
  container.appendChild(leg);
}

function makeCell(date, muted, edd){
  const key = isoUTC(date);
  const eddKey = isoUTC(edd);
  const cell = document.createElement('div');
  cell.className = 'mc-cell' + (muted?' mc-muted':'');
  const dayNum = date.getUTCDate();
  cell.textContent = dayNum;

  if(key === eddKey){
    const b = document.createElement('span');
    b.className = 'eddIcon';
    b.textContent = '🍼';
    cell.appendChild(b);
  }
  return cell;
}

/* Main calculation */
function calculateDueDate(){
  const lmpInput = document.getElementById("lastPeriod").value;
  const cycle = parseInt(document.getElementById("cycleLength").value,10);

  if(!lmpInput || isNaN(cycle)){
    alert("Please enter a valid date and select cycle length.");
    return;
  }

  const lmp = parseUTC(lmpInput);
  const ovulationOffset = cycle - 28; // cycle adjust
  let edd = addDaysUTC(lmp, 280 + ovulationOffset);

  // Metrics
  const today = makeUTC(new Date().getUTCFullYear(), new Date().getUTCMonth(), new Date().getUTCDate());
  const msDiff = edd - today;
  const daysLeft = Math.ceil(msDiff / (1000*60*60*24));
  const daysFromLMP = Math.floor((today - lmp) / (1000*60*60*24));
  const weeksPregnant = Math.max(0, Math.floor(daysFromLMP/7));
  let trimester = (weeksPregnant < 13) ? "First" : (weeksPregnant < 27 ? "Second" : "Third");

  // Show shell
  const shell = document.getElementById('ddcResults');
  shell.style.display = 'block';

  // Cards
  const cards = document.getElementById('ddcCards');
  cards.innerHTML = `
    <div class="cards">
      <div class="card">
        <div class="ico" style="background:#0d47a1">📅</div>
        <div>
          <h4>Estimated Due Date (EDD)</h4>
          <div class="pill pill-edd">${fmtLong(edd)}</div>
          <p style="margin:6px 0 0">Calculated from LMP + 280 days, adjusted for cycle length.</p>
        </div>
      </div>

      <div class="card">
        <div class="ico">🗓️</div>
        <div>
          <h4>Current Week</h4>
          <div class="pill pill-week">Week ${weeksPregnant}</div>
          <p style="margin:6px 0 0">Updated based on today’s date.</p>
        </div>
      </div>

      <div class="card">
        <div class="ico" style="background:#8a5a00">🌸</div>
        <div>
          <h4>Trimester</h4>
          <div class="pill pill-tri">${trimester} Trimester</div>
          <p style="margin:6px 0 0">1st: 1–12 • 2nd: 13–26 • 3rd: 27–40</p>
        </div>
      </div>

      <div class="card">
        <div class="ico" style="background:#d63384">⏳</div>
        <div>
          <h4>Days Remaining</h4>
          <div class="pill pill-left">${daysLeft >= 0 ? daysLeft : 0} days</div>
          <p style="margin:6px 0 0">Most babies arrive between 38–42 weeks.</p>
        </div>
      </div>
    </div>
  `;

  // Calendar highlight on EDD month
  const cal = document.getElementById('ddcCalendar');
  renderEDDCalendar(cal, edd);

  // Note + Print
  document.getElementById('ddcNote').style.display = 'block';
  document.getElementById('printBtn').style.display = 'inline-block';
}
</script>
<!-- ===== END: DUE DATE CALCULATOR ===== -->
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