Your Pregnancy: Week 12
• Your baby is still small enough to fit in the palm of your hand. From the top of her head to the bottom of her buttocks, she's about 61 mm (2.4 in) long and she weighs between 8 to 14 g (0.3 to 0.5 oz).
• Her fingers and toes have separated and centres of bone have begun to develop throughout her skeletal system.
• Most of your baby's organs are fully formed now and starting to function, while her external genitals are beginning to show distinct characteristics of her sex.
• Around this point in your pregnancy, your caregiver will be able to listen to your baby's heartbeat with a Doppler — a special device that magnifies the sound of your baby's heart — and let you hear it, too. Exciting!
A little moody?
Feel like you’re having the worst case of PMS? As your body changes and you feel a little uncertain about the road ahead, it’s natural to have some emotional ups and downs. Maybe you drift off into daydreams or burst into tears at the smallest thing.
What can you do if you find yourself on an emotional roller coaster? Talk to your caregiver about how you feel and get reassurance that it's a normal part of pregnancy. You can also connect with other expecting moms on our pregnancy boards. They’ll know exactly what you’re going through, and sometimes that’s all you need.
Most women will undergo their first ultrasound around this time, and your caregiver may recommend other prenatal tests. We promise, there’s no math involved, but you will have to make some decisions. It's not always clear whether the tests offered during pregnancy do help produce a healthier baby, especially if they cause anxiety for the mother.
Learn more about what an ultrasound looks for, and the other genetic tests that might be recommended, how they may affect your baby, and how their results may be beneficial. Be sure to ask your caregiver what specific information she hopes to gather from the tests and what might happen if you don't have them, then you and your partner can decide what's best for you and your baby.
Boy or girl?
You have another decision to make: Will you find out if you’re having a son or a daughter? Still on the fence? Don’t worry — you’ll have another chance at an ultrasound in your second trimester.
Start spreading the news! Maybe you already shared your little secret with close friends and family, but many parents-to-be wait until the end of the first trimester before announcing it to the world. How will you do it? For inspiration, swap ideas with other parents-to-be on our boards.