Patient's question:
Last time during the winter vacation, my boyfriend and I shared a room, and ever since then, my menstrual cycle has been irregular. What is the reason for having a lighter period after taking emergency contraception?Doctor's answer:
I'm glad to help you with your question. Under normal circumstances, emergency contraception needs to be taken within 72 hours after intercourse to achieve a success rate of over 95%. The earlier it is taken, the better the effect, as emergency contraception interferes with the formation of the zygote through a large amount of progesterone, similar to the effects of breastfeeding. If breastfeeding is successful, it may lead to withdrawal bleeding. If menstruation occurs again with reduced blood flow, it is necessary to undergo a gynecological ultrasound examination and a test for six sexual hormones. This could be due to an impact on the endocrine system, and it may be necessary to undergo endocrine regulation. Typically, this is caused by an increase in estrogen levels.