Although the contraceptive pill is clinically effective, it does not provide 100% contraception. Therefore, if you have not had your period for 1 month after taking the pill, you should rule out the possibility of pregnancy and use the morning and early pregnancy test to find out if you are pregnant. In the absence of pregnancy, it is recommended to continue clinical observation. During the observation period, it is recommended to drink a bowl of hot brown sugar water every day, which has the effect of promoting menstruation, and if you have not had your period for 3 days, you can use the early pregnancy test paper to test once again, because sometimes the pregnancy time is relatively short and cannot be detected with the early pregnancy test paper. If the test is still (-), it is recommended to go to the hospital for an ultrasound examination, mainly to find out the thickness of the endometrium, and then give treatment according to the results.