Week 33
At about 43.7 cm from head to heel, your baby is close in length to a Hydrangea stem (~44 cm), one stem holding a generous gathering of tiny blooms.
This week at a glance
Size
About 43.7 cm (17.2 in), head to heel.
The flower
Hydrangea stem (~44 cm) — this week’s plate, drawn at your baby’s scale.

How big is the baby at 33 weeks?
About 43.7 cm (17.2 in), measured head to heel — the size of a hydrangea stem.1
The brain and nervous system have reached an advanced stage of development. Bones continue hardening, while the skull bones remain soft and separated to allow flexibility for birth and early growth.
33 weeks pregnant is how many months?
Week 33 falls in the eighth month of pregnancy. Weeks and months don’t divide evenly, and your antenatal care counts in weeks — so Zohra keeps weeks, and prints the month for the relatives who ask.
That puts you in the third trimester (weeks 28–40).
What might you be noticing?
Pelvic heaviness. a heavier feeling low in the pelvis can occur as the baby’s position changes.
Practice tightenings. painless Braxton Hicks tightenings may be present.
Sleep and digestion. sleep difficulties, heartburn, bloating, or constipation may continue.
Sourced below.1
Keep the things you reach for most at a comfortable height. If plans are multiplying, write a “not necessary before birth” list beside the necessary one.
For the record: What cluster of small moments made up this week for you? — this week’s page in the app asks the same thing. All forty prompts are here.
Written from the sources above and checked against them. Not reviewed by a clinician — see the editorial policy. Zohra is a journal, not medical care; for anything worrying, talk to your midwife or doctor.