Your Baby's Development
Your baby now weighs about 2 pounds, 2 ounces (1,000 grams) and measures about 10 inches (25 cm) from crown to rump. The folds
and grooves of your baby's brain are still developing and expanding, and your baby's
adding layers of fat.
At your next prenatal appointment, your health care provider may tell you whether
your baby is headfirst or feet- or bottom-first (called breech position) in the womb.
Babies who are in the breech position may need to be delivered by C-section.
Your baby still has 2 months to change position, though, so don't worry if your baby
is in the breech position right now. Most babies will switch positions on their own.
Your health care provider probably sent you for some blood
tests early in your pregnancy. One thing blood tests measure is the Rh
factor, a substance found in the red blood cells of most people. If you don't
have it (if you're Rh negative) but your baby does (is Rh positive), there's the potential
for your baby to have health problems, such as jaundice
and anemia. Your doctor can prevent
these problems by giving you Rh immune globulin shots this week and again after delivery.
PREGNANCY CALENDAR: A week-by-week
- Trimester 1
- Trimester 2
- Trimester 3