As a precaution, if you suspect you're pregnant take a home pregnancy test. If the home pregnancy test is positive, stop taking the pill. If taking a home pregnancy test isn't possible, stop taking the birth control pill until the pregnancy is confirmed or ruled out. In the meantime, use another method of birth control — such as condoms. If you're concerned because you took birth control pills before you knew you were pregnant, talk to your health care provider, but be assured that there's little risk.