3rd trimester · Week 33
33 weeks pregnant
Antibodies crossing the placenta
More maternal antibodies transfer, adding some immune protection after birth. The fetus is packing on fat. Hospital-bag thinking can start without panic.
How big is your baby at 33 weeks?
- Length
- 43.7 cm
- Weight
- 1,920 g
- Size
- Broccoli
On average about 43.7 cm long and 1,920 g. Size comparison: Broccoli.
These are averages; every baby grows at their own pace.
How is your baby developing at 33 weeks?
Bones are harder except the skull. The pupils respond better to light. Average length is about 44 cm; weight often near 1.9 kg. The uterus is crowded; rolls become stretches.
What changes in your body at 33 weeks?
Insomnia, vivid dreams, and needing to shift position all night are common. Braxton Hicks may come in evening clusters that fade with rest and water.
Tips for this week
If tightenings become regular, painful, and do not fade — or you think your waters broke — go in. Finish remaining screening blood tests. Talk about pain-relief options you actually want, not only what others chose.
