27 Weeks Pregnant
At 27 weeks pregnant your baby is about the size of a cabbage. You are in the third trimester, and this week brings its own small changes — for your baby and for you.
The third trimester begins.
- Size of
- a cabbage
- Length
- 36.6 cm
- Weight
- 875 g
- Trimester
- 3
Your baby this week
- Clear sleep and wake cycles appear, often different from yours.
- Your baby yawns, hiccups and stretches inside the amniotic fluid.
- Your baby recognises your voice and may calm when you speak.
Your body this week
- Braxton Hicks tightenings may begin — practice contractions, not labour.
- The growing uterus presses up against your ribs.
Common symptoms
- Leg cramps, usually at night
- Heartburn and acid reflux, especially after meals
- Painless tightenings that come and go
What to expect
The last stretch asks a lot of your body. Sleep gets harder, movement slows down, and your appointments become more frequent. With 13 weeks to go, focus on rest, on knowing the signs of labour, and on having your bag ready.
Tips for this week
- Get to know your baby’s daily pattern and call your midwife if it changes.
- Book antenatal classes — good ones fill up early.
- Start a list for your hospital bag — no need to pack it yet.
Frequently asked questions
How many months is 27 weeks pregnant?
27 weeks is about 6 months. Pregnancy months do not divide evenly into weeks, so counting in weeks is more precise.
How big is my baby at 27 weeks?
At 27 weeks your baby is around a cabbage — roughly 36.6 cm long and about 875 g. Healthy babies vary a lot around these averages.
What symptoms are normal at 27 weeks pregnant?
The most common ones this week are listed above. Contact your doctor or midwife about heavy bleeding, severe pain, a fever, or any change in your baby’s movements.
Pregnancy weeks are counted from the first day of your last period, so week 1 begins before conception.
This article is for general information only and is not medical advice. Always talk to your doctor or midwife about your own pregnancy.