The second trimester is from 13 to 28 weeks of pregnancy. Most women find the second trimester of pregnancy easier than the first. But it is just as important to stay informed about your pregnancy during these months. You might notice that symptoms like nausea and fatigue are going away. But other new, more noticeable changes to your body are now happening. Your abdomen will expand as the baby continues to grow. Before this trimester is over, you will feel your baby beginning to move! As your body changes to make room for your growing baby, you may experience the following:
- Body aches, such as back, abdomen, groin, or thigh pain
- Stretch marks on your abdomen, breasts, thighs, or buttocks
- Patches of darker skin, usually over the cheeks, forehead, nose, or upper lip. Patches often match on both sides of the face. This is sometimes called the mask of pregnancy.
- Swelling of the ankles, fingers, and face. (If you notice any sudden or extreme swelling or if you gain a lot of weight really quickly, call your doctor right away. This could be a sign of preeclampsia.)
- Darkening of the skin around your nipples
- Numb or tingling hands, called carpal tunnel syndrome
- Itching on the abdomen, palms, and soles of the feet. (Call your doctor if you have nausea, loss of appetite, vomiting, jaundice or fatigue combined with itching. These can be signs of a serious liver problem.)
- A line on the skin running from belly button to pubic hairline
In thirteen to sixteen weeks, muscle tissue and bone continue to form, creating a more complete skeleton. Skin begins to form. You can nearly see through it. Meconium (mih-KOH-nee-uhm) develops in your baby’s intestinal tract. This will be your baby’s first bowel movement. Your baby makes sucking motions with the mouth (sucking reflex). Your baby reaches a length of about 4 to 5 inches and weighs almost 3 ounces.
In sixteen to twenty weeks, your baby is more active. You might feel slight fluttering. Your baby is covered by fine, downy hair called lanugo (luh-NOO-goh) and a waxy coating called vernix. This protects the skin forming underneath. Eyebrows, eyelashes, fingernails, and toenails have formed. Your baby can even scratch itself. Your baby can hear and swallow. Now halfway through your pregnancy, your baby is about 6 inches long and weighs about 9 ounces.In weeks twenty to twenty-eight, bone marrow begins to make blood cells. Taste buds form on your baby’s tongue. Footprints and fingerprints have formed. Real hair begins to grow on your baby’s head. The lungs are formed, but do not work, yet. The hand and startle reflex develop. Your baby sleeps and wakes regularly. If your baby is a boy, his testicles begin to move from the abdomen into the scrotum. If your baby is a girl, her uterus and ovaries are in place, and a lifetime supply of eggs have formed in the ovaries. Your baby stores fat and has gained quite a bit of weight. Now at about 12 inches long, your baby weighs about 1½ pounds.
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