A 50-year-old woman who has menstruation does not necessarily ovulate. 50-year-old woman is generally in the menopause stage, at this time the ovarian function gradually decline, there may be no ovulation or sparse ovulation, so even if there is menstruation is not necessarily ovulation, if the menstruation has been stopped, can not be completely judged will not be ovulation, may still continue to irregularly ovulate for a period of time. 50-year-old woman must do a good job of physical conditioning, if you want to have sex with the best active contraception, so as not to lead to pregnancy, but also need to observe the body, if there is obvious bleeding, abdominal pain, non-menstrual bleeding and other symptoms need to be timely medical examination and treatment.