Take Plan B emergency contraception as soon as possible after unprotected intercourse. The sooner you start it, the better it will work. But it will reduce your risk of pregnancy if you start it up to 120 hours — five days — after unprotected intercourse.

Plan B morning after pill can be taken in one dose or two doses. If you take it in two doses, take the second pill 12 hours after the first pill. Or simply take them both at the same time. Its your choice.

When you take birth control pills as emergency contraception, you must take the pills in two doses, 12 hours apart. The number of pills in each dose depends on the brand of the pill. You must use the same brand of pill for each dose.


If you become nauseous and throw up after taking the first dose of the pills, be sure to use anti-nausea medication an hour before taking the second dose. Or, instead of taking it by mouth, you can insert the second dose as high into your vagina as you can reach. The medicine will be absorbed through the walls of your vagina, and will not make you feel sick to your stomach.

If you throw up after the second dose, you should not take any extra pills. The pills will most likely make you sicker, and probably wont reduce your chance of getting pregnant.
After you take emergency contraception, its normal for your next period to be different from usual.

* It may be earlier or later than usual.
* It may be heavier, lighter, more spotty, or the same as usual.

Be sure to tell any health care provider that you may see before your next period that you have taken the morning after pill. If you do not have your period within three weeks after taking Plan B or other morning after pills, or if you have any symptoms of pregnancy schedule an appointment with your health care provider.

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