Emergency contraceptive pills taken twice in a week can cause menstrual disorders, menstrual disorders, can cause withdrawal bleeding, if taken in this way for a long time, can cause endocrine disorders, amenorrhea or infertility, and even induce breast cancer, endometrial cancer, emergency contraceptive pills are mainly high-dose or high-efficiency progestin drugs, taken to inhibit ovulation, inhibit the normal development of sperm, prevent sperm and eggs The pill is taken to inhibit ovulation, inhibit normal sperm development, prevent sperm and eggs from binding, and prevent fertilization of the egg. After taking the pill, it will interfere with the normal changes of hormones in the body, and the normal physiological cycle will change, causing a series of hormone disorders, and the body will also produce a series of reactions, especially if it is taken frequently, the body’s misconceptions about hormone changes will not be changed over, and there will be new misconceptions, so it will produce some bleeding, menstrual irregularities and other adverse reactions, and frequent overdose of hormones will cause hormone-like reactions.