Your pregnancy week-by-week: week twenty

You’re halfway through your pregnancy! By now, your baby will measure around 25cm from head to heel. She is about the size of a small banana.


Your baby

From this point onwards, your baby’s length will be measured from head to heel rather than crown to rump.

Her growth spurt means that her arms and legs have lengthened in the last few weeks and she’s starting to look more and more like a baby every day. Her lungs, digestive system and immune system are developing, and her bones are getting stronger. You may feel some recurrent jerking inside your tummy caused by your little one hiccupping!

Your baby will also start producing meconium in their bowl. This is a mixture of dead skin cells, amniotic fluid that your baby has swallowed during their time in the womb, and digestive secretion. It’s the black tar-like substance that forms your baby’s first bowel movement after birth.



This is a really exciting time – 20 weeks means seeing your baby on ultrasound again. You should be able to find out the gender of your baby, and you can usually take home a printout of your scan.

The anomaly scan checks your baby’s heartbeat, the structure of her abdomen, the head, the spine, the brain and the volume of amniotic fluid. Detailed measurements of your baby’s bones will also be taken to ensure everything is as expected. The scan also checks for serious conditions such as spina bifida and heart defects.

If you’ve chosen to find out if it’s a boy or a girl, then you may now be narrowing down your list of names, and keeping an eye out for cute outfits!

Are you finding that you are having a few forgetful moments? It may be your ‘baby brain’ kicking in – it’s quite understandable considering all the hard work your body is undertaking.


Your partner

Hopefully attending the scan or seeing a picture of the baby has put your mind at rest about your little one’s health, if you were concerned. This is now countdown time, and soon there will be opportunities to attend antenatal classes with your partner.

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