Does taking the birth control pill once affect your period?

Patient's question:

These many menstrual cycles are not normal. Sometimes they come many days earlier, and sometimes they are delayed by one or two months. The amount is also very little. I have taken birth control pills once before, and it is said that birth control pills can affect the menstrual cycle. Here, I would like to ask you if taking birth control pills once can affect the menstrual cycle?

Doctor's answer:

Previously, if you had taken emergency contraception once orally, it was indeed likely to cause menstrual disorders. However, the effects of the medication would never last too long. If menstrual disorders persist and the menstrual flow becomes excessively light, it still requires attention, as it may still be related to endocrine disorders or insufficient qi and blood. In such cases, you can take Wuji Baifeng Wan for a period of time to regulate your condition. The above information can be used for reference.

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