Human pregnancy lasts about 40 weeks, or just more than 9 months, from the start of the last menstrual period to childbirth
The primary sign of pregnancy is missing one or more consecutive menstrual periods. However, because many women experience menstrual irregularities that may cause missed periods, women who miss a period should see their health care provider to find out whether they are pregnant or whether there is another health problem.
Others signs and symptoms of pregnancy may include:
A pregnancy test is the best way to determine if you are pregnant. Home pregnancy test kits are available over-the-counter and are considered highly accurate. A health care provider can also do a pregnancy test.
NICHD research in the 1970s found that high levels of the hormone human chorionic gonadatropin (HCG) in the urine were associated with pregnancy. This research led to the development of the home pregnancy test that is commercially available today.
If you think you may be pregnant, or have a positive home pregnancy test, see a health care provider.
Prenatal care is the care woman gets during a pregnancy. Getting early and regular prenatal care is important for the health of both mother and the developing baby.
In addition, health care providers are now recommending a woman see a health care provider for preconception care, before she is even trying to get pregnant.
Health care providers recommend women take the following steps to ensure the best health outcome for mother and baby:
All pregnancies involve a certain degree of risk to both mother and baby. But, factors present before pregnancy or that develop during pregnancy can place the mother and baby at higher risk for problems. Women with high-risk pregnancies may need care from specialists or a team of health care providers to help promote healthy pregnancy and birth.
Factors present before pregnancy that can increase risk may include: