Whether or not you can get your period after a chocolate cyst injection, or how long it takes to get your period, varies with each person’s sensitivity to and ability to absorb the medication. Some people will not have a period after one injection, or will experience a small amount of vaginal bleeding when they come to menstruation; others will not have a period until after three injections. However, regardless of whether menstruation occurs or not, it is necessary to take the injection 28 days between two doses, otherwise the effect is not good. Generally, the maximum application time is six months, that is, more than six months after the drug must be stopped, waiting for the natural recovery of menstruation. This is because the absence of menstruation for a long period of time can cause menopausal symptoms and osteoporosis.