First Trimester (Week 1 - 12)

• Your period stops or becomes very light.
• You may feel nausea or queasiness, especially in the morning. Some women vomit.
• Your breasts swell and may be tender.
• You have to urinate more often.
• You feel tired.
• You may become constipated and have heartburn.
• You may have headaches.
• You experience mood swings — feel angry, sad, or happy for no reason.

Six Weeks: By twenty-one days after fertilization, the embryo's tiny heart has begun beating.

DID YOU KNOW... Pregnancy is counted from the first day of a woman's last period. This means that at conception, the unborn child is already considered two weeks old!

Second Trimester (Week 13 - 26)

• You gain weight.
• You can feel the fetus moving.
• The skin on your stomach stretches and may get dry.
• Your breasts get bigger. It helps to wear a supportive bra.
• You may experience ongoing heartburn, indigestion, and constipation.
• You may get nosebleeds.
• Your feet, hands, ankles and face may swell.
• A dark line develops on your skin between your navel and your pubic area.
• A temporary "mask" or darker area of pigmentation may develop on your face.

Eighteen Weeks: By this time eyebrows, eyelashes, and fine hair appear. The child can grasp with his hands, kick, or even somersault.

Third Trimester (Week 27 - 40)

• You can see the fetus move from the outside.
• Your navel pushes out.
• You begin to get backaches.
• You begin to walk differently to accommodate the weight of the fetus.
• You experience painless "practice" contractions.
• You have shortness of breath.
• Finally, labor and delivery!

Twenty-four Weeks: The unborn child is covered with a fine, downy hair called lanugo and a waxy substance called vernix. The fetus still has much growing to do, but some babies could survive if born this early.