Took progesterone stopped coming a little bit of blood is gone, mainly the application of the principle of progesterone withdrawal bleeding, may be related to the short time of taking the drug, the endometrium is thin, endometrial inflammation, the possibility of pregnancy and other factors. 1. Short medication time: progesterone needs to be taken continuously for 3 to 5 days, and menstruation will come in about 7 days after stopping the medication. If the medication is taken for too short a period of time, there may be a situation where a little blood comes and goes. 2. Thin endometrium: when the endometrium reaches a certain thickness, the shedding time will be long and the bleeding will be more, if the endometrium is too thin, it may lead to the situation that only a little bit of blood comes after taking progesterone. 3. endometrial inflammation: if there is endometritis, endometrial damage, or even the presence of uterine cavity adhesions, cervical tube adhesions, if you take progesterone withdrawal bleeding, there may be only a little bit of small amount of bleeding phenomenon. 4. pregnancy may be: if the state of pregnancy, taking progesterone withdrawal bleeding, there may also be only a small amount of bleeding. If taking progesterone withdrawal bleeding, only a little bit of blood is gone, it is recommended that patients go to the hospital in time to determine the cause of the disease in the doctor’s guidance for medication, do not take medication privately.