The pill contains estradiol and progesterone, so it can cause women’s breasts to become sensitive and swollen, which is an adaptive symptom at the beginning of use. The success rate of contraception can reach about 98% when women take the pill correctly. In the process of taking this drug, there will be pain in the breasts and abdomen, which is most likely a symptom of menstruation, so women are advised to relax. If the menstrual period is delayed for more than 10 days, we should consider whether the contraceptive has failed, and we suggest that we should go to the gynecological department of a regular hospital for relevant examinations in time to clearly diagnose whether we are pregnant.