37 weeks pregnant
At 37 weeks you are in the third trimester, and your baby measures about 49 cm from head to heel and weighs about 2.9 kg, roughly the length of an oblong watermelon. Early term starts this week, so learn the signs of labour and when to call the hospital; the 38-week visit falls between now and 39 weeks.
Weighs about 2.9 kg, like a 3 L bottle of milk. Averages from standard growth tables; your scan gives your baby's own numbers.
Your baby at 37 weeks
Early term. The lungs are ready for air in most babies. Most babies have turned head-down by now and have little room left to move.
How you might feel
A show, more frequent tightenings, a burst of nesting energy and loose bowels can all come in the days before labour, or not at all.
Know the signs of labour and when to call the hospital.
Call the maternity unit today for any change in your baby's movements, bleeding, fluid loss, a severe headache or vision changes. 13 HEALTH (13 43 25 84) in Queensland; 000 in an emergency.
What's due this week in Australia
Lodge the Parental Leave Pay and Family Tax Benefit claims
You can lodge up to 3 months before the due date through myGov → Centrelink.
Group B strep swab
A low vaginal–rectal swab, often self-collected at the 36-week visit.
36-week antenatal visit
The baby’s position (if breech, turning the baby by ECV is discussed at 36–37 weeks), signs of labour and when to come in, and consent for vitamin K, the hepatitis B birth dose and newborn bloodspot screening.
Final admin before the birth
Confirm leave dates with your employer (at least 4 weeks before leave starts), save the maternity unit’s number in both phones, check that myGov and the Centrelink claim are in order, and agree who tells whom.
38-week antenatal visit
Blood pressure, position and movements, and a conversation about what happens if you go past the due date: membrane sweep and induction options.
Coming up: 40-week antenatal visit (first pregnancy)
A membrane sweep is usually offered from 40 weeks, and a plan is made for monitoring past the due date.
Coming up: 41-week visit and post-dates plan
A membrane sweep is offered and the baby’s wellbeing is checked (CTG and a fluid scan).
Checklist for the week
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Questions about 37 weeks
How many months is 37 weeks pregnant?
About eight and a half months; 37 weeks is early term.
What trimester is 37 weeks?
Week 37 is in the third trimester. In the Australian guidelines Hello Bub follows, the first trimester runs to 13 weeks, the second from 14 to 27 and the third from 28 weeks.
What are the signs of labour?
Regular contractions that get stronger, longer and closer together, your waters breaking, or a show of mucus with some blood. Call the maternity unit when contractions are about five minutes apart, if your waters break, or for any bleeding or reduced movements.
Written by the Hello Bub team; medical schedule follows the Australian Pregnancy Care Guidelines; last reviewed 3 November 2026.