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Stages of pregnancy

3-minute read

Infographic on the stages of pregnancy in weeks, months and trimesters.

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ºÚÁÏ³Ô¹Ï stages

Keep track of your pregnancy by weeks, months and trimesters.

First trimester

  • 1 month - 1 to 4 weeks
  • 2 months - 5 to 8 weeks
  • 3 months - 9 to 13 weeks

Second trimester

  • 4 months- 14 to 17 weeks
  • 5 months - 18 to 21 weeks
  • 6 months - 22 to 36 weeks

Third trimester

  • 7 months - 27 to 30 weeks
  • 8 months - 31 to 35 weeks
  • 9 months - 36 to 40 weeks

ºÚÁÏ³Ô¹Ï normally lasts about 40 weeks from the first day of your last period. You reach full term at 37 weeks. If your labour doesn’t start by the time you reach 42 weeks, you would then be overdue.

If you have any questions about your pregnancy, call ºÚÁϳԹÏ, Birth and Baby to speak to a maternal child health nurse on 1800 882 436.

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Last reviewed: April 2025


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Giving birth - stages of labour

Learning about the three stages of labour can help you understand what is happening during your labour and when help may be needed.

Read more on ºÚÁϳԹÏ, Birth & Baby website

Giving birth - third stage of labour

The third stage of labour happens after your baby is born, when your womb contracts and the placenta is delivered through your vagina.

Read more on ºÚÁϳԹÏ, Birth & Baby website

Giving birth - second stage of labour

The second stage of labour lasts from when the cervix is fully dilated (open) until your baby’s birth. Learn more about this stage.

Read more on ºÚÁϳԹÏ, Birth & Baby website

Giving birth - first stage of labour

Find out what happens during the first stage of labour; when contractions build up slowly, get stronger and become more frequent.

Read more on ºÚÁϳԹÏ, Birth & Baby website

Call us and speak to a Maternal Child Health Nurse for personal advice and guidance.

Need further advice or guidance from our maternal child health nurses?

ºÚÁÏ³Ô¹Ï Australia acknowledges the Traditional Owners of Country throughout Australia and their continuing connection to land, sea and community. We pay our respects to the Traditional Owners and to Elders both past and present.

This information is for your general information and use only and is not intended to be used as medical advice and should not be used to diagnose, treat, cure or prevent any medical condition, nor should it be used for therapeutic purposes.

The information is not a substitute for independent professional advice and should not be used as an alternative to professional health care. If you have a particular medical problem, please consult a healthcare professional.

Except as permitted under the Copyright Act 1968, this publication or any part of it may not be reproduced, altered, adapted, stored and/or distributed in any form or by any means without the prior written permission of ºÚÁÏ³Ô¹Ï Australia.