Third trimester
Week 30 of Pregnancy
🥬
About the size of a large cabbage
15.7 in · 39.9 cm · 2.91 lb · 1.32 kg (head to heel)
Your baby this week
- Amniotic fluid volume peaks this week — the baby's room is now at its largest.
- Red blood cell production shifts to the bone marrow, a milestone of maturity.
- The eyes can track a light source moved across the belly.
What you may be feeling
- Fatigue returning
- Mood swings
- Clumsiness as your center of gravity shifts
Gentle tips for this week
- A belly support band can ease the new strain on your back.
- Slow down on stairs and wet floors — balance is not what it was.
Common question for week 30
Why am I so clumsy lately?
Relaxin hormones loosen joints, the bump shifts your center of gravity, and fluid changes can affect balance. It is temporary and normal — just give yourself more time and grip.
Every pregnancy is different. Sizes are averages, symptoms vary widely, and none of this replaces the guidance of your own provider.