The bad side of contraceptive pills: short-acting contraceptive pills and emergency contraceptive pills are commonly used in clinical practice, and the bad side of short-acting contraceptive pills are as follows: 1, because short-acting contraceptive pills belong to the estrogen-progestin hormone combinations, which may lead to the body’s water and sodium retention, so that the body weight gain, obesity. 2, will make the menstrual period appear to reduce the amount of short-acting contraceptives can make the endometrium appear to atrophy, resulting in the reduction of the amount of menstruation, and even Some people may experience amenorrhea.3. Since short-acting contraceptives are estrogen-progestogen combinations, long-term use may lead to the appearance of facial discoloration. Emergency contraceptive pills, if taken, have relatively more side effects, such as causing menstrual disorders and endocrine disorders. Therefore, it is recommended not to take emergency contraceptive pills unless it is absolutely necessary.