First Trimester 2^nd Trimester     3^rd Trimester

Embryo at 8 weeks

The ears are just starting to develop; the small swellings will form part of the outer ear.

The embryo measures 0.51 in (13 mm) from crown to rump.

Elbows are now visible.

The baby's spine is straightening up, although the large head still topples forward.

Your uterus is starting to enlarge, but you won't notice any changes in your shape yet.

Digits begin to form on the hands and feet, although they are still fused together.

The umbilical cord contains blood vessels that are beginning to transport nutrients to the embryo and remove waste products.

The eyes are getting larger and darkening with pigment.

The baby's head is large relative to the trunk.

The yolk sac continues to shrink as the placenta now starts to take over nourishment of the embryo.

You're probably beginning to feel different, even though you don't look pregnant. You may feel a bit low and irritable at times; this is largely due to the changing levels of hormones in your body. You may sometimes have mixed feelings about being pregnant, however much you long for a baby. If the idea of going on vacation appeals to you, opt for short trips and a safe climate, and take extra care of yourself.

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