Is there harm in taking birth control pills once a year?

Patient's question:

No

Doctor's answer:

Taking birth control pills can cause delayed or irregular menstruation. Whether contraception is successful needs to be observed based on the onset of menstruation. If menstruation is delayed for a long time, it is necessary to go to a regular hospital for examination in a timely manner to identify the cause of the delayed menstruation, so as to avoid delaying the condition.