Your Baby at 9 Weeks Pregnant
No more tail. The embryo inside you gets a new name this week — the official designation is now fetus. And this fetus is looking less and less like a pink blob. The tail has disappeared and the body shape is now emerging, thanks in part to the elongation and straightening of the trunk area. Your fetus measures about 1 inch long this week.
Growth spurt. This is a critical period for arm and leg development. The legs have lengthened, and the buds that will eventually become the toes have started to sprout. Meanwhile, the arms have gotten longer and have begun to bend at the elbow. A basic hand structure is forming too, with the fingers and thumb clearly differentiated. The structures that will be the liver, gallbladder, spleen, and adrenal gland are becoming specialized.
On the go. This is the beginning of the dance period! Your little one has started moving vigorously, even in response to stimuli from outside your body, such as light and noise. You'll have to wait until the second trimester to actually feel these movements.
Your Pregnancy at 9 Weeks
Make way for milk. Your breasts are probably fuller, heavier, and tender to the touch by now. Although they'll continue to grow as your pregnancy progresses, the sensitivity will usually subside by the end of your fourth month. You may start to see small white bumps on your areolas (the dark-colored part of your nipple). These are glands called Montgomery's tubercles, and they'll produce oils to keep your nipples moist when you start breastfeeding.
Smooth moves. If you weren't active before you got pregnant, now is a great time to choose a safe activity you can stick with for the rest of your pregnancy. Swimming, walking, and yoga are all excellent choices.
Drop by the pool. Many experts consider swimming to be the best exercise for pregnant women since it's gentle on your joints. The hormone relaxin makes your joints loose so your pelvis can expand during birth; consequently, you should avoid exercises that could put too much strain on your joints.