Taking birth control pills within 48 hours after intercourse is effective because the specific method of taking emergency contraceptive pills is to take them orally within 72 hours after intercourse, which can achieve the effect of contraception in the clinic, but if you are taking Yuk-Tin, you only need to take one capsule within 72 hours. Some emergency contraceptive pills require two pills, such as Yuktim taking one within 72 hours and then another one 12 hours later, in order to achieve the purpose of adequate contraception. But no matter what kind of emergency contraceptive pill, after taking it orally, there may be withdrawal bleeding about 3 days after stopping the pill, usually not too much, often without lower abdominal pain, most of them will be cleaned up in about 3-4 days, so don’t be nervous.