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Pregnancy and baby

Your pregnancy week by week

What will happen to my body during pregnancy?

Media last reviewed: 20/03/2017

Next review due: 20/03/2020

There's a lot to consider when you're pregnant, including healthy eating in pregnancy, antenatal care, decisions you need to make about labour and birth, coping with common pregnancy problems, and when pregnancy goes wrong.

You can find out about all these and also read about your baby's development in our week by week pregnancy content. 

Pregnancy weeks 0-8

Three weeks after the first day of your last period, your fertilised egg moves slowly along the fallopian tube towards the womb. Find out what happens when you're 0-8 weeks pregnant. You might start to notice the first signs and symptoms of pregnancy.

Pregnancy weeks 9, 10, 11, 12

By now the face is slowly forming, and the eyes are more obvious and have some colour in them. You might still be feeling tired and sick, but for many women this should clear up soon. Find out what else happens in the third month of pregnancy when you're 9, 10, 11, 12 weeks pregnant

Read more about how much weight you'll put on in pregnancy.

Pregnancy weeks 13, 14, 15, 16

At 14 weeks, the baby is about 85mm long from head to bottom. If you've been feeling sick and tired, you'll probably start to feel better when you're around 13 or 14 weeks pregnant. Find out what else is happening when you're 13, 14, 15, 16 weeks pregnant.

Pregnancy weeks 17, 18, 19, 20

Your baby's body grows bigger so the head and body are more in proportion. Find out what else is happening when you're 17, 18, 19, 20 weeks pregnant.

Pregnancy weeks 21, 22, 23, 24

When you're 24 weeks pregnant, the baby has a chance of survival if she or he is born. Most babies born before this time cannot live because their lungs and other vital organs aren't developed enough. Find out what else is happening when you're 21, 22, 23, 24 weeks pregnant.

Pregnancy weeks 25, 26, 27, 28

Your baby may begin to follow a pattern for waking and sleeping. Very often this is a different pattern from yours, so when you go to bed at night, the baby may wake up and start kicking. Find out what else is happening when you're 25, 26, 27, 28 weeks pregnant.

Pregnancy weeks 29, 30, 31, 32

By about 32 weeks the baby is usually lying with its head pointing downwards, ready for birth. Find out what else is happening at 29, 30, 31, 32 weeks pregnant.

Pregnancy weeks 33, 34, 35, 36

Your baby's bones are starting to harden now, even though the skull bones will stay soft and separated to make the journey through the birth canal easier. Find out what else is happening when you're 33, 34, 35, 36 weeks pregnant.

Pregnancy weeks 37, 38, 39, 40

The amniotic fluid now turns into waste, called meconium, in the baby's intestines, and the soft hair (lanugo) that covered your baby's body is now almost all gone. Find out what else is happening at 37, 38, 39, 40 weeks pregnant.

Pregnancy weeks 40 plus

Find out what to expect if you go overdue, or over 40 weeks pregnant.

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Page last reviewed: 28/02/2017

Next review due: 28/02/2020

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