Taking birth control pills do not need to adjust the menstrual period, birth control pills will cause menstrual cycle disorders and endocrine disorders, within 6 months will return to normal, do not need special treatment. Contraceptive pills are hormonal drugs that women take to avoid pregnancy, containing estradiol and progesterone, which can protect women from unwanted pregnancy under normal use. The main effect is to inhibit ovulation, change the cervical mucus to make it difficult for sperm to penetrate, make it difficult for blastocysts to survive, or change the way the uterus and fallopian tubes move, thus hindering the transportation of fertilized eggs, so as to achieve the effect of contraception.