Emergency contraception can delay menstruation?

Emergency contraception may delay menstruation after birth control.

Emergency contraception works primarily by interfering with a woman's endocrine system, which affects hormone levels and may cause changes in menstrual cycles. It may cause early or late menstruation, as hormonal fluctuations cause changes in the growth and shedding patterns of the endometrium. And different people may respond differently to emergency contraception, with some people experiencing more delayed menstruation and others less severely. Generally speaking, this menstrual delay is usually temporary, and in most cases it will gradually return to normal after a period of time. However, if the menstrual delay is too long, it needs to be taken seriously.