Whether you will be pregnant after taking the pill and having a period depends on whether the period is a real period, if it is a real period, you will not be pregnant, because when you take birth control pills, especially emergency contraceptive pills, most of the time after taking them, there may be withdrawal bleeding, for example, after stopping the pill for 3-5 days there will be a phenomenon of vaginal bleeding, which is not menstruation, but withdrawal bleeding caused by the side-effects of the drug. This is not menstruation, but the withdrawal bleeding caused by the side effects of the drug, so the withdrawal bleeding after taking emergency contraceptive pills does not indicate that the contraceptive is successful or contraceptive failure, and it is difficult to say whether the situation will be pregnant or not. If you don’t have your period when it’s due, it’s best to do a morning-after pregnancy test with morning urine after 5 days of menstruation to find out if you’re pregnant, because although the emergency contraceptive pill has a good contraceptive effect, the rate of contraception can’t reach 100%.