Third trimesterWeek 33 of 40
Your baby at 33 weeks pregnant
Your baby is the size of a pineapple — about 17.2 in long and weighing approximately 4.2 lb.
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Pineapple
The size of a pineapple
Length (crown to heel)
17.2 in
Approximate weight
4.2 lb
Baby's hand
50mm
Baby's foot
54mm
Pregnancy progress81%
🌱 Baby's development at 33 weeks
Your baby's immune system is developing, receiving antibodies from you through the placenta.
🤰 Your body at 33 weeks
Group B Strep testing happens around weeks 35-37 — a routine vaginal swab that guides your care team during labour. Simple and painless.
✨ Did you know?
Antibodies are transferring from you to your baby through the placenta right now, building the immune protection they'll need in their first weeks of life.
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