Second trimester
Week 24 of Pregnancy
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About the size of a ear of corn
11.8 in · 30.0 cm · 1.32 lb · 0.60 kg (head to heel)
Your baby this week
- A meaningful milestone: babies born from this week receive active care in the NICU if needed.
- Lungs keep branching and developing surfactant.
- The inner ear is fully formed — the baby now has a sense of balance.
What you may be feeling
- Frequent urination returns with force
- Itchy skin
- Possible colostrum leakage
Gentle tips for this week
- The glucose screening window (24-28 weeks) opens now — schedule it.
- Leaking colostrum is normal; nursing pads solve it discreetly.
Common question for week 24
What does 'viability' mean?
Viability is the point — around 24 weeks — where a baby born early has a chance of survival with intensive neonatal care. Survival rates rise steeply with every additional week.
Every pregnancy is different. Sizes are averages, symptoms vary widely, and none of this replaces the guidance of your own provider.