First Trimester 2^nd Trimester     3^rd Trimester

Fetus at 11 weeks

Your baby measures 2.4 in (6.1 cm).

Ears are nearly in their final position on the head.

Limbs are fully formed and have lengthened; your baby will be trying out all sorts of new positions.

Your uterus is beginning to lift up out of the bony cavity of the pelvis.

The intestines, previously contained in the base of the umbilical cord, move into the abdominal cavity where there is now room.

The umbilical cord is fully developed, ensuring that vital nutrients from your bloodstream, such as glucose, are carried to the baby from the placenta. It lengthens during the course of the pregnancy.

Your baby's heart is beating rapidly, about 160 beats per minute, which is twice as fast as your own heart rate.

The mouth can open and close, allowing your baby to swallow and yawn.

The head now has a more rounded shape.

Yawning, arms and legs waving-your baby is on the go and you can actually see it happening. Most women have their first scan this week, and it's the big thrill of the first trimester. Up until now, you may have preferred to keep your pregnancy a precious secret. After the scan, you'll probably feel more confident about making an announcement, especially when you have the photos to prove there's really something happening!

Excerpted from Pregnancy Day by Day.
Copyright © 2009 Dorling Kindersley Limited.
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