Track prenatal development and clinical milestones. Explore reproductive metrology, Naegele's rule, and gestational phasing.
Gestational Progress: 0 Weeks
Calculating a pregnancy due date is more than just counting nine months on a calendar. In clinical practice, the first day of your Last Menstrual Period (LMP) is used as the starting point.
| Trimester | Key Milestones |
|---|---|
| First (Formative) | Organogenesis (organs forming), heartbeat detectable. |
| Second (Structural) | Fetal movement, rapid growth. |
| Third (Maturation) | Lung development, positioning for birth. |
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