Your Pregnancy Week by Week: Weeks 13-16
Baby: You may be able to hear the baby's heartbeat in the doctor's office. Fine hair, lanugo, may be growing on the head. Arms and legs are moving, and the nervous system is working.
Mom-to-be: Within the next few weeks, you may start to feel your baby move, called "quickening." It often feels like a gas bubble or subtle fluttering movement. As it happens more regularly, you'll know it's your baby. Your body is changing in many other ways. Increased blood volume to support your growing baby may produce nosebleeds, and you may notice your leg veins are becoming more apparent. Good news: Because your uterus is shifting, you may not have to urinate so much.
Tip of the Week: If your leg veins bulge, you may want to wear support stockings, put your feet up when you can, and exercise to improve blood flow.
What's Happening Inside You?
Your baby's fingers and toes are well-defined; his or her eyelids, eyebrows, eyelashes, nails, and hair are formed. Teeth and bones become denser. Your baby can even suck his or her thumb, yawn, stretch and make faces.
The baby's reproductive organs and genitals are now fully developed, and your health care provider can see on ultrasound if you are having a boy or a girl. You don't have to find out the baby's sex yet -- that's up to you.