All weeks
Third Trimester
Week 31 of pregnancy
Your baby is the size of a coconut.
Length: 41.1 cm / 16.2 in · Weight: 1.50 kg / 3.31 lbs
Baby at 31 weeks
- Baby can process information — recognize voice.
- Lungs continue to mature.
- Movements may slow as space gets tight.
What you may feel
- Bigger bump.
- Braxton Hicks more frequent.
- Trouble sleeping.
- Hip pain.
This week’s checklist
- Continue daily movement counts.
- Sleep with pillows.
- 31-week appointment (first-time mums).
Key milestone
Baby recognizes your voice.
Doctor / midwife visits
31-week appointment (first-time mums NHS).
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.