It is best not to take emergency contraceptive pills for breastfeeding. Emergency contraceptive pills are high in hormones, and breast milk after taking the pills may contain the ingredients of contraceptive pills. When the baby enters the body after breastfeeding, it will increase the estrogen in the baby’s body, resulting in pseudo-development, which is not good for the baby’s health. If emergency contraceptive pills are taken during breastfeeding, it is recommended that breastfeeding should not be considered until 3-5 days later. If a woman has breast distension and excessive milk within a short period of time after taking emergency contraceptive pills, she also needs to use a breast pump to suck out the milk, which is conducive to the normal secretion of milk. Breastfeeding women are affected by hormones, there may be irregular menstruation, menopause and other phenomena, but they can ovulate, and there is a possibility of pregnancy after intercourse. So usually must be good contraceptive measures. In addition to the emergency contraceptive pill, there are also condoms, intrauterine devices, and tubal ligation for women who do not want to have children again. Women who are breastfeeding should use drugs under the guidance of a doctor, and must not use drugs blindly to avoid adverse consequences.