If you take dydrogesterone tablets, the vast majority of you will have your period 3-7 days after stopping the medication. If there is still pain in the stomach while waiting for menstruation, it may be due to the fact that the pelvis will be in a state of congestion when menstruation is imminent after the oral administration of dydrogesterone tablets, so there will be a vague pain in the stomach, but there will not be severe pain in the lower abdomen. If the pain in the lower abdomen is more serious, it is recommended to exclude the following causes: firstly, whether the pain in the lower abdomen is due to miscarriage of the first sign of pregnancy. The second is whether the pain in the lower abdomen is caused by ectopic pregnancy, so it is necessary to do an early pregnancy test as soon as possible, or go to the hospital to take a blood test for HCG to find out whether you are pregnant or not, and then the clinic will give the appropriate treatment. In addition, this situation may also be pelvic inflammation caused by the pain.