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methods have high rates of effectiveness if they are used consistently. Follow
your health professional's instructions on what to do if you miss or skip your
birth control pills. Some general guidelines are listed here.
Always read the pill label for specific instructions. Or call your doctor. How likely pregnancy is depends on a few things, such as when you missed the pill, how many pills you missed, what kind of pills you take, and whether you had sex.
Here are some basic guidelines:footnote 1
If you had unprotected sex
during the time that you missed taking pills, you can use
emergency contraception to help prevent pregnancy. You can get emergency contraception without a prescription at most drugstores.
and diarrhea can decrease the effectiveness of birth control pills. It is
recommended that another method of birth control be used for 7 days after you
have had the
flu, even if you did not miss any pills.
Talk to your doctor if you are taking medicines for
epilepsy (phenytoin and barbiturates) or tuberculosis (rifampin). These
medicines may interfere with how well your birth control pills work.
Progestin-only pills must be
taken at the same time each day. If you take a pill more than 3 hours late, take it as soon as you remember even if that means you will take 2 pills in one day. Use another method of birth control for the next 48 hours to prevent pregnancy.footnote 2 Consider using emergency contraception if you have had sex in the past 3 to 5 days.
Nelson A (2007). Combined oral contraceptives. In RA Hatcher et al., eds., Contraceptive Technology, 19th ed., pp. 193–270. New York: Ardent Media.
Raymond EG (2007). Progestin-only pills. In RA Hatcher et al., eds., Contraceptive Technology, 19th ed., pp. 181–191. New York: Ardent Media.
ByHealthwise StaffPrimary Medical ReviewerSarah Marshall, MD - Family MedicineSpecialist Medical ReviewerFemi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
Current as ofMay 22, 2015
Current as of:
May 22, 2015
Sarah Marshall, MD - Family Medicine & Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology
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