At 37 weeks pregnant you are in the third trimester, with about 3 weeks to go until a 40-week due date. Weeks are counted from the first day of your last period, so this is roughly month 9 of pregnancy.
How big is your baby at 37 weeks?
Around week 37, your baby is often compared to a swiss chard. Fruit and vegetable comparisons are a friendly way to picture the size, not an exact measurement.
From the INTERGROWTH-21st international standard (University of Oxford), the median estimated fetal weight at 37 weeks is about 2.81 kg. Most healthy babies fall between roughly 2.07 kg and 3.63 kg (about the 2nd to 98th percentile). Scan estimates carry some margin of error, so a number on its own is rarely a reason to worry. Our guide on reading the weight on your scan report explains more, and the baby weight checker lets you enter your own report.
The third trimester runs from week 28 until birth. The baby gains most of its weight now, and your body prepares for labour.
Your body at 37 weeks
Your baby is considered early term. Tightenings and pressure are common. Know the signs of labour and where you will go.
What is going on
Your baby is now considered early term, and your body is preparing, with a softer cervix and stronger practice contractions. Sleep and comfort are hard to find.
What can help
Keep your hospital bag, documents and transport plan ready, and know the route to the hospital.
Other weeks
35 weeks pregnant · 36 weeks pregnant · 38 weeks pregnant · 39 weeks pregnant
See all weeks on the pregnancy week by week page, or try the interactive week-by-week guide.