Pregnancy week by week / Week 39
39 weeks pregnant
That’s 9 months — the third trimester, with 1 week to go.
Baby size at 39 weeks
Your baby is about 50.7 cm (20.0 in) long and weighs about 3.29 kg (7 lb 4 oz) — roughly the size of a mini watermelon.
What’s happening at 39 weeks
Officially full term. The baby is ready to be born any day now — the brain and lungs continue their final fine-tuning.
Common symptoms at 39 weeks pregnant
- •Strong Braxton Hicks
- •Cervix changes
- •Nesting or loose stools
- •Pelvic pressure
- •Early signs of labour
Every pregnancy is different — you may have all, some or none of these. Contact your doctor or midwife about anything that concerns you.
Count down to your due date
If you’re 39 weeks pregnant today, your due date is around Tuesday, June 23, 2026. Adjust the date below and create a free countdown to share.
First day of your last menstrual period (how doctors date a pregnancy)
⚕️ This is an estimate based on Naegele’s rule (40 weeks from your last period). Only about 1 in 20 babies arrive on the exact due date. Always confirm with your doctor or midwife.
FAQ
How many months is 39 weeks pregnant?
39 weeks pregnant is about 9 months, in the third trimester.
How big is the baby at 39 weeks?
At 39 weeks the baby is about 50.7 cm (20.0 in) long and weighs about 3.29 kg (7 lb 4 oz) — roughly the size of a mini watermelon.
What are the symptoms at 39 weeks pregnant?
Common symptoms around 39 weeks include strong braxton hicks, cervix changes, nesting or loose stools, pelvic pressure. Symptoms vary a lot from person to person — contact your provider if anything worries you.
When is my due date if I am 39 weeks pregnant?
If you are exactly 39 weeks pregnant today, your estimated due date is around Tuesday, June 23, 2026 — 1 weeks from now. Use the calculator below with your real last-period date for a personalised estimate.
See every stage on the pregnancy week-by-week guide or open the full due date calculator.