All weeks
Third Trimester
Week 39 of pregnancy
Your baby is the size of a small watermelon.
Length: 50.7 cm / 20.0 in · Weight: 3.30 kg / 7.28 lbs
Baby at 39 weeks
- FULL TERM — 39 weeks counts as full term (39-40+6).
- Baby fully developed.
- Brain continues growing.
What you may feel
- Big bump.
- Possible nesting.
- Tired + alert.
- Possible 'lightning' contractions.
This week’s checklist
- Know 5-1-1 rule (5 min apart, 1 min long, 1 hour).
- Phone numbers ready.
- Birth bag in car.
Key milestone
Full term reached.
Doctor / midwife visits
No specific appointment — labour any day.
Top foods this week
Educational only — not medical advice. Always consult your midwife or GP. Sources: NICE NG201 antenatal care, NICE NG207 inducing labour, NHS, RCOG. Read the full medical disclaimer.