Hi and welcome to HCM! Thanks for posting your query here. Duphaston is a progesterone derivative and helps in supporting the gestation. In general the corpus luteum in the ovary secretes progesteron which helps in the implantation of the embryo in the wall of the uterus. From 12th week onwards the placenta starts producing progesterone and maintains untill the term. This is very crucial for maintaining the pregnancy. A lower progesterone level induces bleeding from the uterus. This is supported by the exogenous administration of progesterone. It will take time for the bleeding to stop. You didnt mention whether it is spotting or heavy bleeding? If it is spotting only there are maximum chances of getting through it. If it is heavy bleeding chances are less. But for this you need to take absolute bed rest wherin you should not get up from the bed even for urination also. Take healthy food and dont get anxious and nervous because this will affect the bleeding. A followup scan will help you in noticing the progress. I hope you will get through and I wish you a speedy recovery. Regards