Week 39 of Pregnancy
"Full term" per ACOG.
Fetal size
Mini watermelon
- Length
- 50.7 cm
- Crown-to-heel
- Weight
- 3.29 kg
Fetal development
- Brain development continues at high speed.
- Lungs are fully ready for first breaths.
- Newborn body shape is essentially complete (~3.2–3.4kg).
Maternal changes
- A sudden burst of energy ("nesting instinct") may appear.
- Digestion and appetite can change.
Recommended checkups
- Share the labor signs checklist with your family.
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Textbook averages. Individual variation is wide and this is not medical advice — confirm with your OB.