Endometriosis and InfertilityNormally, every month when you have your period, the lining comes out in your menstrual flow. In women with this problem, tissue that looks and acts like the lining of the uterus grows outside of the uterus in other areas like on or under the ovaries, behind the uterus, on the tissues that hold the uterus in place or on the bowels or bladder.
