Delayed menstruation does not go after taking dydrogesterone tablets and blood water clots to consider with the drug taking time is too short, incorrect way of taking medication, but also may be gynecological organic diseases and so on. 1. drug taking time is too short: for the delayed menstruation does not go for women with endocrine disorders and so on, taking dydrogesterone can play the role of atrophy endothelium, stopping the role of bleeding, but generally take the drug 3 days after the vaginal bleeding can be gradually reduced or stopped, so it may be due to the time of taking the drug is too short. 2. Incorrect way of taking medication: Since dydrogesterone is a progestin preparation, you can’t stop taking medication at will during the period of taking medication, otherwise it will lead to endothelial stripping and vaginal bleeding. 3. Organic gynecological diseases: for patients suffering from submucous fibroid, endometrial cancer, cervical cancer, there may be blood and water clots after taking divalproex tablets. It is recommended to consult the doctor in time to clarify the cause of the disease, and actively surgical treatment. For patients with delayed menstruation and blood clots after taking dydrogesterone tablets, if the amount of bleeding is not more than the usual amount of menstruation, you can continue to take the medicine, if the amount of bleeding is more than the amount of menstruation, it is recommended to go to the gynecology department of regular hospitals as soon as possible to improve ultrasound and other related examinations, and to clarify the cause of the cause of the disease under the guidance of the doctor to actively treat the disease.