39 Weeks Pregnant
Summary
Size
mini watermelon
Length
50.7 cm
Weight
3288 g
Until due date
1 weeks
39 / 40 week
%98
What's Happening With Your Baby
The baby is now full term. The lungs continue producing surfactant. The skin has whitened and thickened. This is the ideal maturity for birth.
What's Changing For You
Labour could start at any moment. Cervical changes are being tracked at your appointments. Pressure and discomfort are at their peak.
To Do This Week
Keep your phone charged and your hospital bag in the car.
If you notice reduced movement, contact your doctor without waiting.
Run through your breathing techniques one last time.
Frequently Asked Questions
How many months is 39 weeks pregnant?
Week 39 of pregnancy falls in month 9 and in the third trimester. Pregnancy months don't run in neat four-week blocks, so the week-to-month conversion rarely lands on a whole number — which is why pregnancy is tracked in weeks.
How big is the baby at 39 weeks?
At 39 weeks your baby is roughly the size of a mini watermelon: around 50.7 cm long and 3288 grams. These are averages; clear variation between babies is normal, and what matters is the growth curve your doctor is tracking.
How long is left at 39 weeks pregnant?
Assuming a 40-week pregnancy, you have around 1 weeks left at week 39. Most births happen between weeks 37 and 42, so a due date is a range rather than a fixed day.
What should I watch out for at 39 weeks?
Keep your phone charged and your hospital bag in the car. If you notice reduced movement, contact your doctor without waiting. Run through your breathing techniques one last time.
Track your pregnancy week by week
Baby Wallie brings your baby's weekly development, your health logs and AI-powered nutrition, sleep and breathing programs into one app. Free for 7 days.
Related Guides
When To Seek Care Immediately
Whatever week you are in, contact your doctor or the nearest health facility without waiting if you have: vaginal bleeding or fluid loss, severe persistent abdominal pain, a severe headache, blurred vision or flashing lights, sudden swelling of the hands or face, a fever above 38 °C, burning on urination with fever, persistent vomiting, fainting, or — after week 28 — a clear reduction in your baby's movements. In these situations reach real medical care rather than an app or a web search.
This content is for informational purposes only and does not replace medical advice. Always consult your doctor or midwife about your own or your baby's health.