Now 'ear this. Arm and leg development was the big news last week. By the end of this week, the outside ears will be developed. Right now they sit very low on the head, but as the head grows bigger, they'll move to the right spot on either side. Soon, your voice will be your little one's favorite sound.
Vision quest. Your little one's eyes are also developing. The basic optical structure is in place and the eyelids are beginning to cover the eyes, which are still on either side of the head.
The whole tooth. Your baby's first tooth won't break through the gums until several months after birth, but those little choppers are already starting to form as tiny tooth buds. At birth, your little one will have 20 baby teeth waiting to pop out during the first few years of life, as well as permanent teeth developing underneath the gums.
Measuring up. Thanks in part to developing bones and lengthening limbs, the fetus now weighs about 2.5 grams and measures 2 to 3 centimeters (around an inch) from crown to rump (head to bottom).
Kick the caffeine habit. It's tempting to reach for another cup of coffee when you're exhausted. And though research indicates that drinking coffee in moderation isn't harmful to the fetus, many health care providers recommend that you reduce or eliminate caffeine from your diet. There's certainly no good reason to keep ingesting caffeine—it has no nutritional value, and it can make you (and possibly your little one) feel nervous. Caffeine can also contribute to dehydration since it's a diuretic (something that makes you urinate). If you must have your daily latte or soda, be sure to drink extra water to compensate for the loss of fluid.
Circulation information. Starting around now, your heart begins to pump more blood through your veins. In fact, by 32 weeks, you'll have 40 to 50 percent more blood in your body than before you were pregnant. As you might expect, the extra volume is necessary to provide blood to the uterus and placenta. Speaking of circulation, the steps you take now to improve your blood flow may help prevent varicose veins later in your pregnancy. Walking daily, lying on your left side, elevating your legs (with knees supported), sitting without crossing your legs—all of these things can help prevent your circulation from getting sluggish.
From the experts. "If you had chicken pox as a child, you will pass along your protective antibodies to your baby during pregnancy," says Suzanne Dixon, M.D., M.P.H. This being the case, there's usually no need to worry if you're exposed during pregnancy. "However, there are situations in which you need to take special precautions—if you did not have chicken pox as a child, for example." Read more from Dr. Dixon on protecting yourself and your baby from this common childhood illness.