22 weeks pregnant
At 22 weeks you are in the second trimester, and your baby measures about 28 cm from head to heel and weighs about 430 g, roughly the length of a papaya. The whooping cough vaccine is free from 20 weeks under the National Immunisation Program, and the 20-week antenatal visit should be done by 22+6.
Weighs about 430 g, like a tin of tomatoes. Averages from standard growth tables; your scan gives your baby's own numbers.
Your baby at 22 weeks
Eyebrows and eyelids are distinct and the grip is stronger. Curled in the fetal position and filling out with fat; the eyes open from about week 26.
How you might feel
Iron needs rise and tiredness can creep back, along with swollen feet by evening and the first Braxton Hicks tightenings for some.
Iron needs rise. Talk about diet or supplements if your count was low.
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.
20-week antenatal visit
Review of the morphology scan, blood pressure, the first fundal-height measurement and a chat about the baby’s movements.
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.
Coming up: 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.
Coming up: 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.
Checklist for the week
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Questions about 22 weeks
How many months is 22 weeks pregnant?
About five months.
What trimester is 22 weeks?
Week 22 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.
When should I get the whooping cough vaccine in pregnancy?
Between 20 and 32 weeks in every pregnancy, free under the National Immunisation Program. It passes protection to the baby for the first months before their own vaccinations start.
Written by the Hello Bub team; medical schedule follows the Australian Pregnancy Care Guidelines; last reviewed 3 November 2026.