All weeks
Second Trimester
Week 20 of pregnancy
Your baby is the size of a banana.
Length: 16.4 cm / 6.5 in · Weight: 300 g / 10.6 oz
Baby at 20 weeks
- Halfway point of pregnancy.
- Baby has hair on head.
- All organs in their final positions.
- Female babies' eggs are forming.
What you may feel
- Bigger bump.
- Possible Braxton Hicks (practice contractions).
- Stretch marks may appear.
- Movements clearly felt.
This week’s checklist
- 20-week anomaly scan (if not done at 18-19).
- Apply moisturiser for stretch marks.
- Start thinking about baby names + nursery.
Key milestone
Halfway point + 20-week anomaly scan.
Doctor / midwife visits
NHS 20-week anomaly scan if not done at 18-19 weeks.
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.