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12 weeks pregnant

End of the first trimester

This week is the end of the first trimester. The good news is that the risk of miscarriage is greatly reduced by the end of the week.

What’s Going on with the Baby

Baby’s toes and fingers will now get separated

Your baby’s rapid growth is continuing, as he or she now measures about 90 millimeters and weighs 14 grams. The brain now has the similar structure it will have at birth. During the third month, all the organs and structures of your baby have already been formed, although they will still develop during the remaining months in preparation for delivery. Bile is also being secreted at this time. Your baby’s toes and fingers will now get separated, and hair will begin growing. The genitals begin to take on their characteristics, although it’s still impossible to determine the sex of the baby at this point.

Start practicing peristalsis

The muscles in the intestinal walls will start practicing peristalsis – the movements and contractions in the digestive tract to be able to digest food. This is to prepare your baby for life outside the uterus. If you listen to your baby’s heartbeat using a Doppler, you will notice that it is very, very fast, quite similar to the sound of a horse trotting.

What’s Going on with Mommy

Fatigue and nausea

It will probably be a good week for you, since you will now start feeling a lot better from the fatigue and nausea. The uterus will grow enough to bulge above the pubic bone. Your abdomen is beginning to expand, especially if you have been pregnant before. The placenta has now taken over production of the hormones.

Forward movement of the uterus

Expectant mothers will welcome the shifting up and forward movement of the uterus, so as not to press the bladder so much. As a result, your regular bathroom visits will be less frequent for the next three months. The frequent urination will return during the third trimester, since the uterus will be large enough to press your bladder again.

Now for Daddy

You may want to join a support group for fathers-to-be, to help you with your partners pregnancy.

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