24 weeks pregnant
At 24 weeks you are in the second trimester, and your baby measures about 30 cm from head to heel and weighs about 600 g, roughly the length of a 30 cm school ruler. The glucose tolerance test window opens this week and runs to 28 weeks, and the 24-week antenatal visit falls now in a first pregnancy.
Weighs about 600 g, like a loaf of sliced bread. Averages from standard growth tables; your scan gives your baby's own numbers.
Your baby at 24 weeks
A viability milestone; the skin is still thin and translucent. Curled in the fetal position and filling out with fat; the eyes open from about week 26.
How you might feel
Many people feel well, with a rounder bump, some breathlessness on stairs and the baby's movements now clearly felt.
The glucose tolerance test window opens (24–28 weeks).
Call the maternity unit today for 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
Whooping cough (pertussis) vaccine
Free under the National Immunisation Program in every pregnancy.
Book antenatal classes and a hospital tour
Public hospitals run free or low-cost childbirth, breastfeeding and early-parenting classes, in person or online.
Put your name on childcare waitlists
If you plan to use childcare in the first year, many centres have waitlists of 6–12 months.
24–25-week antenatal visit (first pregnancy)
Blood pressure, fundal height, the baby’s movements, and the request forms for the glucose test and 28-week bloods.
Gestational diabetes test (OGTT)
A fasting 75 g oral glucose tolerance test at a pathology collection centre: a fasting blood sample, the drink, then samples at 1 and 2 hours.
Coming up: 26–28-week blood tests
Full blood count (iron) and blood-group antibodies, usually drawn with the glucose test.
Coming up: Lodge the Parental Leave Pay and Family Tax Benefit claims
You can lodge up to 3 months before the due date through myGov → Centrelink.
Checklist for the week
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Questions about 24 weeks
How many months is 24 weeks pregnant?
About five and a half months.
What trimester is 24 weeks?
Week 24 is in the second 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 is the glucose tolerance test?
A fasting blood test over about two hours between 24 and 28 weeks that screens for gestational diabetes. It is free through public pathology, and the hospital tells you how to prepare.
Written by the Hello Bub team; medical schedule follows the Australian Pregnancy Care Guidelines; last reviewed 3 November 2026.