As long as the emergency contraceptive pill is taken within the prescribed time and according to the norms. Even if there is no withdrawal bleeding after taking it, it will not affect the contraceptive effect of the emergency contraceptive pill. Even if the patient has withdrawal bleeding, it does not mean that the contraceptive rate of the patient is 100% and does not mean that the patient’s medical history is successful. Therefore, if the patient does not have withdrawal bleeding after taking the emergency contraceptive pill, the patient should be careful to observe it. If the patient is able to have a normal period, it proves that the contraception is successful. If the patient has delayed menstruation or is on her period and has vaginal bleeding, but the amount of vaginal bleeding is small with abdominal cramps and prolonged bleeding, it is possible that the contraception has failed. This is because there is a 2% to 4% chance of unwanted pregnancy after taking the emergency contraceptive pill. Therefore, in this case, the patient needs to check the blood and urine HCG to determine if the pregnancy is unplanned, and further treatment will be done based on the test results and the patient’s medication status and whether or not she wants to have children.