You can stop taking progesterone when you get your period after taking it. Progesterone, also called progesterone, has the main effect of inhibiting contraction of the myometrium, making the uterus flaccid, less mobile, less responsive to external stimuli, and decreasing the sensitivity of the gestational uterus to the use of contractogens. Progesterone is often used clinically to adjust menstruation, to do artificial cycles or to protect the fetus. Taking progesterone will cause the shedding of the uterine lining, which in turn will lead to withdrawal bleeding. If a woman experiences menstrual periods during the time she is taking progesterone, she can stop taking progesterone in this case. Progesterone is a hormonal preparation, according to the endometrium, under the guidance of a doctor, do not take the drug at will, so as not to affect normal menstruation. After taking progesterone, there may be a little more menstrual flow, which is normal, do not be too nervous, but if the menstrual flow increased significantly, and continue to do not stop bleeding, this situation is recommended to go to the hospital in a timely manner, improve the relevant examination, in order to avoid the occurrence of anemia and other unforeseen circumstances. It should be noted that the possible adverse effects of taking progesterone include abdominal pain, dizziness and so on. Some people are strictly prohibited from using progesterone, such as those who are allergic to progesterone and those with abnormal liver function. The medication should be used in accordance with medical advice.