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 23 of pregnancy

23 Weeks Pregnant

Second trimester

Baby size

About the size of a grapefruit

28.9 cm

What's developing

Small blood vessels are forming in the lungs. The baby can hear your voice and outside sounds clearly.

Common symptoms this week

Snoring
Swollen ankles
Braxton Hicks
Backache

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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