All weeks
Second Trimester
Week 21 of pregnancy
Your baby is the size of a carrot.
Length: 26.7 cm / 10.5 in · Weight: 360 g / 12.7 oz
Baby at 21 weeks
- Now measured crown-to-heel (legs straighten).
- Eyebrows + eyelids fully formed.
- Movements stronger + more rhythmic.
What you may feel
- Clearer fetal movements.
- Possible varicose veins.
- Increased blood volume.
- Forgetfulness ('pregnancy brain').
This week’s checklist
- Track movements daily.
- Wear support stockings if veins bothering.
- Stay hydrated.
Key milestone
Movements settle into a recognizable pattern.
Doctor / midwife visits
No specific NHS appointment unless concerns.
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.