If bleeding occurs while taking Mafron, it depends on the amount of bleeding and how long it lasts. If the patient has very heavy bleeding, like a menstrual period, it is recommended to stop the medicine and treat this bleeding as a menstrual period and then observe the duration of this bleeding. If the amount of bleeding during the medication is very low, less than the usual amount of menstruation, most of it is a side effect of taking the medication, caused by the low dosage of the medication, and should not be stopped at this time.