3rd trimester · Week 39
39 weeks pregnant
Full term
You are full term. The brain still grows in these last days. In uncomplicated pregnancies, waiting for labor is often appropriate; induction policies vary.
How big is your baby at 39 weeks?
- Length
- 50.7 cm
- Weight
- 3,290 g
- Size
- Pumpkin
On average about 50.7 cm long and 3,290 g. Size comparison: Pumpkin.
These are averages; every baby grows at their own pace.
How is your baby developing at 39 weeks?
The chest is more rounded. Antibodies continue to transfer. Average length is about 50–51 cm; weight often near 3.3 kg. Only a minority of babies arrive exactly on the due date.
What changes in your body at 39 weeks?
Sleep is fragmented. You may feel restless, teary, or unusually calm. A burst of energy is possible; do not deep-clean if your back already hurts.
Tips for this week
Keep eating and drinking. If you are past your personal risk factors (for example, diabetes or hypertension), follow the extra monitoring you were given rather than generic advice. Call for reduced movements, heavy bleeding, or a headache with visual change.
