Does taking emergency contraception cause irregular menstruation?

Patient's question:

I have had my period delayed by half a month for several consecutive months, and I'm always worried if something is wrong. Previously, I took emergency contraception after having sex with my boyfriend. I've never had my period like this before. Will taking emergency contraception cause my period to be irregular for several months again?

Doctor's answer:

Using contraceptive medication may lead to irregular menstruation, and emergency contraceptive medication may cause abnormal hormone excretion, resulting in abnormal skin breakdown. However, it can gradually return to normal with proper regulation afterward. It is recommended that patients pay attention to developing good habits, practice appropriate contraception, and avoid excessive use of contraceptive medication to prevent potential impacts on their health. Rest well.

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