27 of 40 weeks
Baby size this week
As lovely as an aubergine
Measurements are averages — every baby grows at their own pace.
Length 36.6 cm 14.4 in
Weight 875 g 1 lb 15 oz
Your baby this week
- Brain activity resembles a full-term newborn's
- Your baby may hiccup — you can feel the jumps
- Sleep patterns include REM sleep, dreaming begins
- Lungs, liver and immune system keep maturing
Your body this week
Braxton Hicks
Backache
Swelling
Restless legs
This week's to-do
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How we measure week 27
Pregnancy weeks are counted from the first day of your last menstrual period, following standard ACOG and NHS guidance. Sizes are crown-rump length in early weeks and head-to-heel from around week 20. Your care team may adjust dates after an ultrasound.
BumpCount offers general information and does not replace advice from your doctor or midwife.