Pregnancy week by week
What is happening with your baby and your body each week, with the checks and to-dos that matter in Australia.
Choose a week
First trimesterWeek 1Before conceptionFirst trimesterWeek 2Before conceptionFirst trimesterWeek 3About the size of a pinheadFirst trimesterWeek 4About the size of a poppy seedFirst trimesterWeek 5About the size of a sesame seedFirst trimesterWeek 6About the size of a lentilFirst trimesterWeek 7About the size of a blueberryFirst trimesterWeek 8About the size of a raspberryFirst trimesterWeek 9About the size of a cherryFirst trimesterWeek 10About the size of a kumquatFirst trimesterWeek 11About the size of a limeFirst trimesterWeek 12About the size of a plumFirst trimesterWeek 13About the size of a lemonSecond trimesterWeek 14About the size of a peachSecond trimesterWeek 15About the size of an appleSecond trimesterWeek 16About the size of an avocadoSecond trimesterWeek 17About the size of a pearSecond trimesterWeek 18About the size of a capsicumSecond trimesterWeek 19About the size of a mangoSecond trimesterWeek 20About the size of a bananaSecond trimesterWeek 21About the size of a carrotSecond trimesterWeek 22About the size of a papayaSecond trimesterWeek 23About the size of a grapefruitSecond trimesterWeek 24About the size of a corn cobSecond trimesterWeek 25About the size of a cauliflowerSecond trimesterWeek 26About the size of a lettuceSecond trimesterWeek 27About the size of a head of broccoliThird trimesterWeek 28About the size of an eggplantThird trimesterWeek 29About the size of a butternut pumpkinThird trimesterWeek 30About the size of a cabbageThird trimesterWeek 31About the size of a coconutThird trimesterWeek 32About the size of a pineappleThird trimesterWeek 33About the size of a rockmelonThird trimesterWeek 34About the size of a honeydew melonThird trimesterWeek 35About the size of a pomeloThird trimesterWeek 36About the size of a cos lettuceThird trimesterWeek 37About the size of a bunch of silverbeetThird trimesterWeek 38About the size of a leekThird trimesterWeek 39About the size of a small watermelonThird trimesterWeek 40About the size of a watermelon
Useful tools
PregnancyDue date calculatorInstant due date, week and trimester.PregnancyPregnancy plannerEstimate dates and organise the weeks ahead.PregnancyAppointment trackerScans, tests, vaccinations and questions in one list.
Related guides
PregnancyPublic or private birth in Australia: costs and choicesHow public, private and midwife-led care differ, and what each usually costs.PregnancyHospital bag checklist for Australian parentsPlan separate bags for labour, the post-birth stay and the trip home. Ask your hospital what it supplies.Money & supportPaid Parental Leave explainedWho can get Parental Leave Pay, how much it is and how to share it between parents.Dads & partnersA partner’s guide to pregnancyPractical ways to be involved from the first scan to the birth.