Breastfeeding can only be considered 3 days after taking the emergency contraceptive pill. If a woman has breast swelling and more milk for a short period of time after taking the emergency contraceptive pill, she also needs to use a breast pump to suck out the milk to facilitate the normal secretion of milk. When a woman is breastfeeding, her ovaries will ovulate irregularly, so she needs to take good contraceptive measures, and it is safer to use a penis condom or place an intrauterine device. Frequent use of emergency contraceptives may cause gastrointestinal discomfort, menstrual disorders, and a decrease in the quality of breast milk, which is detrimental to the growth and development of the baby and the recovery of the woman’s body. The emergency contraceptive pill contains a large amount of hormonal components and should not be taken more than three times in a year, otherwise it may lead to endocrine disorders in women.