There is also a possibility of pregnancy during intercourse during withdrawal bleeding. The emergency contraceptive pill is a high dose of progestin, and withdrawal bleeding may occur after about five days of taking the pill due to withdrawal of progestin levels. Retreat bleeding does not mean that the pill is successful. An important mechanism of emergency contraception is the suppression or delay of ovulation. If ovulation is suppressed, there is no possibility of pregnancy during the month, but if ovulation is delayed until the time of withdrawal bleeding, there is a possibility of pregnancy during intercourse. Therefore, after taking the emergency contraceptive pill, it is required to take additional contraceptive measures if you have intercourse again that month, and it cannot be said that after taking the emergency contraceptive pill once, you can stop using contraception.