First Trimester

Changes in Your Baby

By the end of the first trimester, your baby is about three inches long and weighs about half an ounce. The eyes move closer together into their positions, and the ears are in position. The liver is making bile, and the kidneys are secreting urine into the bladder. Even though you can't feel your baby move yet, your baby will move inside you in response to pushing on your abdomen.
 

Prenatal Care During the First Trimester

During the first trimester of pregnancy, visiting your doctor regularly is important. Your doctor will schedule you for regular checkups throughout the next nine months to keep your baby healthy and to avoid problems with delivery.
 
Become a partner with your doctor in managing your care. Keep all of your appointments -- every one is important! Pregnancy typically lasts 40 weeks, counting from the first day of your last menstrual period. The first trimester lasts 12 weeks, the second from 13 to 27 weeks, and the third from 28 to 40 weeks. Your doctor will refer to your pregnancy by the age of the fetus in weeks.
 
During the first prenatal visit, your doctor will discuss important parts of your health history that may have some impact on your pregnancy. These include diseases, operations, and other pregnancies. There also will be questions about your family's health history. You will have a complete physical exam, lab tests, and a Pap test. From now on, your blood pressure, urine, and weight will be checked at every visit.
 
For special genetic or medical reasons, you may need other lab tests, like blood or urine tests, cultures for infections, or ultrasound exams. Your doctor will discuss them with you during your visits. Your doctor also will calculate your expected delivery date and answer questions about any concerns you might have.
 
Pregnancy and Pain

Pregnancy Info

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