How long does it take to menstruate after taking progesterone orally

Normally, taking progesterone in the withdrawal of a week or so to menstruation, so the general women eat progesterone should be about two weeks later to menstruation. Progestin for the treatment of menstrual delay is very common, in the withdrawal of a week or so to menstruation, but there are different reasons will cause not to menstruation. If the patient premature ovarian failure, estrogen levels are also very low, this time the endometrium has not grown up, and then with progesterone, there is no withdrawal bleeding; There is also to rule out accidental pregnancy, this time after using progesterone did not come menstruation, progesterone can play a role in protecting the fetus, the use of progesterone is not caused by pregnant women produce menstruation. If not pregnant, there may be a patient's estrogen level is relatively high, wait for a period of time to repeat the medication, the patient will come menstruation.