Answers to Frequently Asked Questions About…
Risk of Pregnancy
Am I still at risk of pregnancy if I have sex after taking emergency contraceptive pills?
            Yes. Emergency contraceptive
            pills (also called "morning
            after pills" or "day after pills") only protect
            against pregnancy when you take them after sex. That means you can still get pregnant if you take emergency
            contraception and then have sex again without using another kind
            of contraception or your birth control fails. If you still don’t
            want to get pregnant, you will need to take emergency
            contraceptive pills again. (Although emergency
            contraceptive pills would probably still protect you if you had
            sex immediately after taking them, there is no research to show how
            long they would work.)
            Some women find they need emergency
            contraception more than once because they haven’t found
            a regular type of birth control that fits their health and lifestyle
            needs. To find out more about which contraceptives might work best
            for you, click here.
            And be sure to talk to your health care provider if you are having
            any problems with your birth control.