Hi mommies updates for those in week 12 from online site:
Week 12
Baby: The fetus now measures about 2.5 inches from crown to rump and weighs between three-tenths of an ounce and half an ounce. It is fully formed, from tooth buds to toenails, and your baby's job now is to continue getting larger and stronger for the rest of your pregnancy. With the most critical development behind the fetus, the chance of miscarriage drops considerably after this week.
Mom-to-be: Nausea and energy start to improve. You may be experiencing occasional headaches, dizziness and fatigue from hormonal changes. If it's your first baby, you still could be wearing loose-fitting clothes, but if you've had other pregnancies, you'll probably start to show earlier and may be in maternity clothes. The typical weight gain by now is about three to five pounds. Fathers-to-be might also experience pregnancy symptoms, called couvade or "hatching," during the third month and at delivery, including nausea, abdominal pain, appetite changes and weight gain.
Tip of the Week: Most women develop stretch marks on their abdomen, breasts, hips or buttocks sometime during their pregnancy. They won't go away, but they'll usually fade after pregnancy. Despite claims from manufacturers, creams and oils don't minimize them. It depends on your skin's natural elasticity. Gradual rather than rapid weight gain may help, as well as avoiding excessive weight gain during pregnancy.
+++
Ayn - welcome to the forum
If you haven't gotten MS, you should be quite safe cos it usually subsides by end of the 1st trimester!
On exercise, swimming/yoga/pilates/brisk walking should be fine. I am back to doing my Xbox kinect boxing as well!