When menstruation is delayed and the amount of menstruation is small, doctors usually prescribe progesterone or inject progesterone. I've had this situation before. I'll come immediately after eating my period, but I can't do it without eating it, and I find this situation is getting worse and worse. This time, I slowly stopped progesterone after taking Ejiao Huangjing Pill. After normal menstruation, there has been no rebound.