Second trimester pregnancy – Week by Week

The second trimester is the middle three months of your pregnancy. This is a time when lots of women tell the world they’re pregnant and begin to feel like the pregnancy is more ‘real’.

The second trimester of your pregnancy is from week 13 to week 28 – roughly months four, five and six.

As well as feeling and looking more pregnant during these weeks, you may also have more energy than you did in the first trimester. This will come as a great relief if you have been struggling with sickness, tiredness or anxiety about getting through the first trimester.


13 Weeks pregnancy: Welcome to the second trimester. Fingers crossed, over the next few weeks, you’ll leave the worst of the morning sickness and tiredness behind you.

14 Weeks pregnancy : Your growing baby is now around the size of a kiwi fruit. They measure about 85mm from the top of their head to the bottom.

15:Weeks  Pregnancy : Your baby is about the size of an apple.

16 Weeks Pregnancy : Your baby is now about the size of a lemon.

17 Weeks pregnancy : Your baby is about 12cm long, and weighs roughly 150g. Your bump is getting bigger.

18 Weeks Pregnancy : Your baby measures about 14cm this week – roughly the same as a bell pepper!

19 Weeks pregnancy: Your baby is now around the length of a banana and you may be starting to feel them move. You might even start to feel them actually prodding or kicking you!

20 weeks pregnancy:  If they stood up straight your baby would be around 26cm tall, nearly the length of an A4 piece of paper

21 Weeks Pregnancy : Wow – you’re halfway there! Your baby is growing hair and starting to look much more like the baby you’ll meet at the end of your pregnancy.

22 Weeks pregnancy : Your baby now weighs one whole pound! From around now, they start to weigh more than the placenta. They’re about the size of a papaya.

23 Weeks pregnancy;  Your baby is about 30cm now and roughly the size of a large mango.

24 Weeks pregnancy : Your baby is now about the size of a corn on the cob.

25 Weeks pregnancy: Your baby can respond to light, touch and sound now. You might even notice them jumping or kicking in response to a loud noise.

26 Weeks pregnancy : If you could see your baby, you might notice their eyelids open. They’ll soon be blinking.

27 Weeks pregnancy : Your baby’s about the size of a cauliflower now.

28 Weeks Pregnancy : Your baby weighs about 1kg now and is roughly the size of an aubergine.


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