34 of 40 weeks
Baby size this week
As lovely as a honeydew melon
Measurements are averages — every baby grows at their own pace.
Length 45 cm 17.7 in
Weight 2.15 kg 4 lb 12 oz
Your baby this week
- The central nervous system and lungs continue maturing
- Fat layers regulate body temperature after birth
- Your baby's movements include rolling and poking
- The kidneys are fully developed
Your body this week
Heartburn
Swelling
Insomnia
Braxton Hicks
This week's to-do
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How we measure week 34
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.