If you have menstruation while taking dydrogesterone tablets, you can observe the amount of menstruation first, and then treat the symptoms. If the bleeding is small, you can continue to take; if the bleeding is large, it is recommended to stop taking the medicine and observe or perform diagnostic scraping. The vast majority of people taking dydrogesterone tablets during basically will not appear to menstruation, if eating dydrogesterone tablets during menstruation, menstrual flow is relatively small, this situation is generally not need to be overly nervous, you can take dydrogesterone tablets normally, according to the course of treatment to take the end. If the bleeding is heavy during the course of taking the tablets, it is necessary to be alert to the possibility of endometrial pathology, and it is best to consult a doctor in time, and if necessary, it may be necessary to carry out endometrial diagnostic scraping, except for the possibility of malignant endometrial pathology. If endometrial cancer is present, it may lead to bleeding. It is important to keep a good attitude during the treatment and to have regular check-ups with the doctor.