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.