72 hours contraceptive pill is also known as emergency contraceptive pill, generally used for unprotected sex, but women will have some damage to the body after taking the pill, if nausea, vomiting, weakness and discomfort after taking the pill, the general damage is not great, but if the women are weak or repeatedly take the emergency contraceptive pill, vaginal bleeding, menstrual disorders and other adverse conditions, this is more serious, it is recommended to seek medical advice. 1, nausea If vomiting occurs within one hour after taking the pill, it is necessary to take the same dose of the pill. 2. 3, vaginal bleeding: a few days after taking the emergency contraceptive pill, women may experience withdrawal vaginal bleeding due to the hormones contained in the emergency contraceptive pill, but the amount of bleeding is usually small and does not last long. If the amount of blood is more and longer, you need to consider whether it is abnormal uterine bleeding, and you should go to the hospital for relevant examination in time; 4. Irregular menstruation: If women take emergency contraceptive pills many times in the same menstrual cycle, it can cause frequent menstruation, frequent menstruation, amenorrhea and other symptoms of irregular menstruation, and it usually takes 2-3 months to restore regular menstruation. As the emergency contraceptive pill is harmful to women’s body, it is not suitable for long-term or repeated use. It is recommended to take it under the guidance of a doctor, not to have unprotected sex after taking it, and it is recommended not to eat 2 hours after taking the pill to avoid vomiting, which will affect the effect of the drug.