Hi, Duphaston is a brand name for the drug dydrogesterone, which is a synthetic hormone used to treat various gynecological conditions such as irregular menstrual periods, endometriosis, and infertility. Duphaston is also commonly used during pregnancy to support the production of progesterone, a hormone important for maintaining a healthy pregnancy. While Duphaston is generally considered safe for use during pregnancy, it may have some side effects, including nausea and vomiting, headaches, breast tenderness, abdominal bloating and discomfort, skin rash, dizziness and fatigue, and irregular menstrual bleeding. However, these side effects are usually mild and temporary, and not everyone who takes Duphaston will experience them. In your case, your doctor may have prescribed Duphaston to help support your pregnancy and reduce the risk of miscarriage, which is more common in the first trimester of pregnancy. Bleeding during early pregnancy can be a sign of miscarriage or other complications, so it is important to follow your doctor s advice and continue taking Duphaston as directed. It is also important to note that Duphaston alone may not be enough to stop the bleeding, and your doctor may recommend additional treatments or monitoring to ensure the health of your pregnancy. It is best to discuss any concerns or questions you have about your treatment plan with your doctor. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician