Your baby doesn't have much room to maneuver now that she's over 18 inches long and weighs over 5 pounds. In fact, most of her development is complete. From here on, she's mostly concentrating on fattening up. You don't have a lot of room to grow either your uterus is now about 15 times its normal size.
How your baby's growing
Your baby's getting big. She weighs a tad over 5 pounds and is just over 18 inches long. Because it's so snug in your womb, she isn't likely to be doing somersaults anymore, but the number of times her kicks should remain about the same. Her kidneys are fully developed now, and her liver can process some waste products. Most of her basic physical development is now complete — she'll spend the next few weeks putting on weight.
How your life's changing
Your uterus — now up under your ribs — has expanded to about 15 times its original volume, and you may feel like you've run out of room! If you could peek inside your uterus, you'd see that there's much less amniotic fluid and much more baby in there now. Your ballooning uterus is crowding your internal organs too, which is why you probably have to urinate more often and have heartburn and other digestive problems. If you don't have these problems, you're one of the lucky few.
Your doctor or midwife will probably want to start seeing you every week until you deliver. She may ask you to count fetal movements, to track your baby's activity level. Between now and 37 weeks, she'll also do a culture to check for bacteria called Group B streptococci (GBS). This is done by swabbing the lower end of your vagina and your rectum — the swab is the size of a regular cotton swab, and it won't hurt at all. Group B streptococcus is usually harmless in adults, but if you have it and pass it on to your baby during labor and birth, it can cause complications (like pneumonia, meningitis, or a blood infection). Because 10 to 30 percent of pregnant women have the bacteria and don't know it, it's important to be screened. (The bacteria come and go on their own — that's why you weren't screened earlier in pregnancy.) If you're a GBS carrier, you'll be given IV antibiotics when you're in labor, which will reduce your baby's risk of infection by 70 percent.