Week by weekTrimester 3

Week 33 — size of a butternut squash.

A two-minute partner brief: how baby is growing, what's changing for her, and one practical thing you can do this week.

For her

Sleep gets harder, Braxton Hicks may begin and nesting instincts kick in.

For baby

About the size of a butternut squash. Organs and senses are developing on schedule.

Partner action this week

Re-read your birth preferences together.

Educational guidance, not medical advice. If you're worried about symptoms, contact your midwife, GP or maternity unit.

Plan ahead with partner tools.

Due date, trimester tracker, appointment timeline — built for partners.

Open calculators