How accurate is a due date?

A due date is an estimate. Only about 1 in 20 babies arrive on it; most are born within two weeks either side.

Can my due date change?

Yes — early ultrasound measurements can refine it. Later scans usually do not shift an established date.

Are these baby-size comparisons exact?

The fruit and vegetable comparisons are friendly approximations of average length. Every pregnancy is unique — your baby may be a little larger or smaller.

Week 33 of pregnancy

33 Weeks Pregnant

Third trimester

Baby size

About the size of a pineapple

43.7 cm

What's developing

The skull remains soft to allow it to move through the birth canal. Bones elsewhere are hardening.

Common symptoms this week

Warmer body temperature
Braxton Hicks
Aching back
Fatigue

This is an estimate for information only — only about 1 in 20 babies arrive on their due date. Always confirm dates with your midwife or doctor.

Frequently asked questions

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