Here is the English translation of the provided content: 18-20 days of the menstrual cycle, what medicine can be taken Note: The carriage return () has been retained as instructed.

Patient's question:

I got married last year. Recently, I've been experiencing lower abdominal pain, especially during my period. I'm very worried about it affecting my fertility, and I'm also extremely sensitive to cold and coldness. Could you please tell me what kind of medicine I can take during my 18-20th physiological period?

Doctor's answer:

Menstrual cycle extension refers to a normal menstrual cycle where the duration of menstruation exceeds 7 days, or even lasts for two weeks.
It is often caused by incomplete luteal regression, prolonged endometrial repair, pelvic inflammatory disease, endometritis, or the insertion of an intrauterine device (IUD). It is necessary to seek medical attention as soon as possible to identify the underlying cause and receive appropriate treatment!
Oral short-acting contraceptives, such as Marvelon, can be used for contraception and also to treat menstrual disorders. Since anovulation occurs, there is no dysmenorrhea. Short-acting contraceptives can be used to suppress ovulation and treat dysmenorrhea. This medication does not affect pregnancy, and ovulation will return to normal after discontinuation.