After taking 10 days of progesterone after 5 days of menstruation but the amount is too much, this is progesterone makes the endometrium thickening, and then caused by the drug withdrawal bleeding caused. Progesterone for progesterone, the main role is to promote the transformation of the uterine lining, may make the menstrual cycle prolonged, the uterine lining thickening, so after taking progesterone 3 to 7 days will let the uterine lining neatly fall off, the bleeding will be relatively more, which is known as the medication withdrawal bleeding. Progesterone this kind of drug is used for progesterone lack of supplementary treatment, the use of may appear dizziness, nausea and other adverse reactions, for the body has thrombophilia can not be used, pay attention to the use of under the guidance of the doctor. Clinical recommendations for temporary observation, usually pay attention to adequate rest, avoid late night and labor, pay attention to private hygiene, keep the vulva clean and dry, if there is discomfort need to go to the hospital in a timely manner.