Brown discharge after taking progesterone after pregnancy is mainly considered to be due to preeclampsia, not due to progesterone. The occurrence of preeclampsia is related to abnormal embryonic development as well as insufficient maternal progesterone secretion, hypothyroidism, excessive tension and anxiety; the main manifestation of this disease is brown discharge in the vagina or vaginal bleeding. The appearance of brown discharge, consider and progesterone is not related, because progesterone belongs to a kind of progesterone drugs, after pregnancy can provide support and protection for the early growth and development of the fetus; clinically, is generally used as birth control drugs. If the vaginal discharge continues to increase, you should go to the obstetrics and gynecology department of the hospital in a timely manner; and take appropriate measures under the guidance of a professional doctor, so as not to affect your personal health.