Taking progesterone blood stopped generally have to continue to take. Progesterone is progesterone, can support the uterine lining, so that the lining is no longer shedding, and to achieve the effect of stopping bleeding, commonly used in menstrual disorders, luteal insufficiency and other endocrine diseases, but also used to protect the fetus, to support the function of the corpus luteum. Normal physiologic progesterone elevation is generally maintained for 10 to 14 days, so routine progesterone will continue to be taken for 10 to 14 days after stopping bleeding, and withdrawal bleeding occurs within 1 week after stopping the drug. Early withdrawal can cause the endometrium to shed its lining again and bleed. For patients on fertility preservation, it usually depends on the embryo to decide when to stop the medication. There are many ways to take progesterone, and the specific dosing regimen needs to be under medical supervision.