You can’t take progesterone when you have your period. Progesterone is a progesterone drug, if there is not enough progesterone in your body, you can use progesterone to supplement it to play the role of progesterone. At present, since you have already had your period, it means that the hormone level in your body has normalized and you do not need to take the medication again. The main function of progesterone is to promote further growth of the endometrium and transform the endometrium from a growth type to a secretory type. If menstrual disorders occur, progesterone can be used to regulate the menstrual cycle. However, if you have your period, you need to stop taking the medication to allow the endometrium to have hormonal withdrawal bleeding. If you continue to take progesterone, the endometrium will shed incompletely, thus triggering prolonged menstrual periods and increased bleeding, resulting in always dripping blood out of the vagina.