Close Close
Mother and Baby

12 Weeks Pregnant – What You Need to Know

12 weeks pregnant

At a glance:

  • What’s the startle reflex? 
  • Pregnancy cravings
  • Your 12-week ultrasound scan

What’s happening to your baby

All your baby’s body parts are present and she’s now officially a foetus in medical terms (although she looks like an adorable little alien!). Her intestines have moved into place in her abdomen.

And your unborn baby will have developed the startle reflex, also known as the Moro reflex. This means she’ll hear sound and react to it by opening and closing her arms and legs.  Probably not the time to freak her out with your banging collection of techno tunes. Instead, take the chance to introduce your baby to your favourite music following some of our tips for a making baby playlist.


What’s happening to you

You probably don’t have much of a bump to show off yet, but your womb is now about the size of a grapefruit. It’ll push itself above your pelvic bone so you may get the first vague outline of a baby belly.


Your jeans, trousers and skirts are probably becoming quite snug, so it’s time to invest in a belly band (which you can put over your pre-pregnancy clothing until you stock up your maternity wardrobe). 

You may also notice that you’re craving different foods, or have gone off previously favourite dishes. Nobody’s entirely sure what causes cravings, but it’s thought that pregnancy hormones heighten your sense of smell which explains why you ‘go off’ certain foods. 

You might seriously crave salty foods, which some experts say is a way of replacing salts lost through being sick. Any excuse to add crisps to your diet, no?


What you may consider doing 

You’ll have your first ultrasound scan at around 12 weeks which is often called the ‘dating’ scan because this is when your due date is confirmed. You’ll have a cold gel applied to your stomach while the sonographer rubs an ultrasound probe over your bump to pick up images of your baby. 

They’ll also take measurements from your baby’s head to her bottom (known as the crown–rump length) and monitor her heartbeat. And the best bit? You can usually take home a printout of the scan to proudly show off to family and friends (although you may have to pay for it).

<< SEE Week 11

SEE Week 13 >>

Image courtesy of Your Pregnancy Day-By-Day by Professor Stuart Campbell, published by Carroll & Brown, £9.99

Related content:


No comments have been made yet.

Subscribe to Mother&Baby!

Be the best mum you can be and let Mother & Baby guide you along the way. Each issue is jam packed with REAL advice from mums just like you. Subscribe today & get a free welcome gift!

Win £1,000 of Carpetright vouchers
Win £1,000-worth of Carpetright vouchers!

Create a fantasy world on your floor with your baby for your chance to win £1,000-worth of Carpetright vouchers!

Win an Abeille cellular blanket from Hippychick
Win an Abeille cellular blanket from Hippychick

Abeille Cellular Blankets, available fromHippychick, are delectably soft, made from 100% cotton and now available in six super-stylish colours. Click for your chance to win!

Win a year’s supply of Blueiron liquid iron supplement
Win a year’s supply of Blueiron liquid iron supplement

Blueiron is Scandinavia’s fastest-growing liquid iron supplement and has already helped thousands of women low in iron during pregnancy, breastfeeding and those with intense fitness regimes. Click for your chance to win!

Win a bumper box of Kiddylicious Super Snacks
Win a bumper box of Kiddylicious Super Snacks

Made from quinoa, lentils and chickpeas, and packed with vegetable protein, Kiddylicious Super Snacks help to keep your little ones whizzing about. Click for your chance to win!

Ovulation Calculator
Ovulation calculator

Trying for a baby? Work out when you're most fertile to increase your chances of getting pregnant with our easy-to-use ovulation calculator.

Pregnant woman
Due Date Calculator

When is your baby due? If you’re having trouble remembering dates and counting up the days on your fingers and toes, don’t worry – use our due date calculator.

Get M&B in your inbox!

Sign up to Mother&Baby today and get news and advice about your body and your baby straight to your inbox every week.