Pregnancy calendar week by week – Cow & Gate

woman holding her baby

The miracle of what’s going on inside you during pregnancy is a true wonder of nature. From a single cell to a complete human of 200 million cells in just 40 weeks – it’s an awe-inspiring thought. Keeping track of your baby’s development is an exciting part of your pregnancy and with so many changes, there’s lots to discover. If there’s anything you’re unsure of or need to ask along the way, our expert team will be happy to help – just ask!

Christine, pregnancy advisor and mum

Christine, pregnancy advisor and mum

Learn about your pregnancy at every stage

Click on any week in our pregnancy calendar to find out how your baby is changing, read about what things you might be experiencing and pick up some tips, plus discover some fascinating facts about your pregnancy.

pregnancy calender - week by week

1st Trimester

1st Trimester

Week 1

Week 2

Week 3

Week 4

Week 5

2nd Trimester

2nd Trimester

3rd Trimester

3rd Trimester

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Videos

1st Trimester: your baby's development

78

1st Trimester: your baby's development

Amazing things are happening inside! Learn how your baby develops in this first trimester.

2nd Trimester: your baby's development

141

2nd Trimester: your baby's development

Eyelashes are forming and taste buds are too! Learn how your baby continues to develop and grow.

3rd Trimester: your baby's development

200

3rd Trimester: your baby's development

Your baby is gaining weight and brain power! Learn what else is going on to prepare them for life in the outside world!

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