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Prenatal care: 1st trimester visits
Pregnancy and prenatal care go hand in hand. During the first trimester, prenatal care includes blood tests, a physical exam, conversations about lifestyle and more.By Mayo Clinic staff
Prenatal care is an important part of a healthy pregnancy. Whether you choose a family physician, obstetrician, midwife or group prenatal care, here's what to expect during the first few prenatal appointments.
Prenatal care: The first visit
As soon as you think you're pregnant, schedule your first prenatal appointment. Set aside ample time for the visit. You and your health care provider have plenty to discuss! You might want to include your partner in the appointment as well.
Your health care provider will ask many questions, including details about:
- Your menstrual cycle
- Use of birth control
- Past pregnancies
- Your personal medical history
- Your family medical history
- Medication use, including prescription and over-the-counter medications or supplements
Be sure to mention even sensitive issues, such as domestic abuse, abortion or past drug use. Remember, the information you share will help your health care provider take the best care of you — and your baby.
If there's any part of your medical history that you don't want to share with your partner or other loved ones, mention it to your health care provider privately.
Few women actually give birth on their due dates. Still, establishing your due date — or estimated date of delivery — is important. An accurate due date allows your health care provider to monitor your baby's growth and the progress of your pregnancy, as well as schedule certain tests or procedures at the most appropriate time.
To estimate your due date, your health care provider will likely count ahead 40 weeks from the start of your last period — or add seven days to the first day of your last period and then subtract three months.
If there's any question about your due date — if you don't know the date of your last period or your periods are irregular, for example — your health care provider might recommend an early ultrasound to help confirm the date.
Your health care provider will check your weight, height and blood pressure. He or she will listen to your heart and assess your overall health.
Your health care provider might examine your vagina and the opening to your uterus (cervix) for any infections or abnormalities. Changes in the cervix and in the size of your uterus can help confirm the stage of your pregnancy.
You might need a Pap test to screen for cervical cancer as well, depending on how long it's been since your last screening.
At your first prenatal visit, blood tests might be done to:
- Check your blood type. This includes your Rh status. Rhesus (Rh) factor is an inherited trait that refers to a specific protein found on the surface of red blood cells. Your pregnancy needs special care if you're Rh negative and your baby's father is Rh positive.
- Measure your hemoglobin. Hemoglobin is an iron-rich protein found in red blood cells that allows the cells to carry oxygen from your lungs to other parts of your body, and to carry carbon dioxide from other parts of your body to your lungs so that it can be exhaled. Low hemoglobin is a sign of anemia — a lack of healthy red blood cells.
- Check immunity to certain infections. This typically includes rubella and chickenpox (varicella) — unless proof of vaccination or natural immunity is documented in your medical history.
- Detect exposure to other infections. Your health care provider might suggest blood tests to detect various other infections, such as hepatitis B, toxoplasmosis, syphilis, gonorrhea or chlamydia. You might also be offered a test to check for HIV, the virus that causes AIDS.
A urine sample might be tested for signs of a bladder, urinary tract or kidney infection.
Your health care provider will discuss the importance of proper nutrition and prenatal vitamins. Your first prenatal visit is a good time to discuss exercise, sex during pregnancy and other lifestyle issues. You might also discuss your work environment and the use of medications during pregnancy.
If you smoke, ask your health care provider for suggestions to help you quit.
Screening tests for fetal abnormalities
Prenatal tests can provide valuable information about your baby's health. Your health care provider might offer ultrasound, blood tests or other screening tests to detect fetal abnormalities.
(1 of 2)
- Lockwood CJ, et al. The initial prenatal assessment and routine prenatal care. http://www.uptodate.com/index. Accessed May 8, 2012.
- You and Your Baby: Prenatal Care, Labor and Delivery, and Postpartum Care. Washington, D.C.: The American College of Obstetricians and Gynecologists; 2011.
- Cunningham FG, et al. Williams Obstetrics. 23rd ed. New York, N.Y.: The McGraw-Hill Companies Inc.; 2010. http://www.accessmedicine.com/resourceTOC.aspx?resourceID=46. Accessed May 10, 2012.