Patient's question:
NoDoctor's answer:
Hello, it should be caused by birth control pills. Emergency contraception pills, due to their effects of inhibiting and delaying ovulation and suppressing the endometrium, can delay the next menstrual period. It may also be due to a temporary increase in hormone levels in the blood caused by taking the medication, followed by a drop and subsequent withdrawal bleeding, which manifests as an early menstrual period. The side effects of birth control pills include nausea, gastrointestinal discomfort, headaches, vaginal bleeding, breast tenderness, slight weight gain, nervousness, low mood, absence of menstruation, and a tendency for the skin to develop brown spots and acne. It usually takes 2-3 months to return to normal.