FERTILITY & PREGNANCY TRACKER
Ovulation & Baby Growth Calculator
Calculate your fertile window, peak ovulation date & watch how your baby grows week-by-week!
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Select Your Period Details
Most Fertile Window
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Peak Ovulation Day
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Estimated Due Date (EDD)
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👶 Baby Growth Journey (Visualizer)
If conception happens this cycle, here is how your baby develops week by week:
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Week 4: Tiny Seed Stage
Implantation occurs! The blastocyst settles into the uterine lining. Neural tube starts developing.
Size: Poppy Seed (~1mm)
💡 Medical Insight: Ovulation typically occurs 14 days before your next period starts. Having intercourse during your 5-day fertile window maximizes the chance of natural conception.