All weeks
Second Trimester
Week 23 of pregnancy
Your baby is the size of a grapefruit.
Length: 28.9 cm / 11.4 in · Weight: 500 g / 17.6 oz
Baby at 23 weeks
- Lungs developing surfactant (helps breathing after birth).
- Skin still wrinkled but filling out.
- Sense of touch developing.
What you may feel
- Bigger bump.
- Possible itchy skin (consult GP if palms + soles — cholestasis check).
- Lower-back pain.
- Visible varicose veins.
This week’s checklist
- If itching is on palms + soles, GP same day (obstetric cholestasis).
- Apply unscented moisturiser.
- Sit + stand frequently to avoid swelling.
Key milestone
Viability threshold approaching (24 weeks UK legal viability).
Doctor / midwife visits
Maternity unit + birthing plans starting to consider.
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.