The onset of symptoms related to endometriosis varies person to person. Symptoms happen as a result of your menstrual cycles. With each period the endometrial implants will bleed no matter where they are located in your body. As a result of the bleeding implant(s), scar tissue or “spider webs” develop in your pelvis causing pain and all the other symptoms related to endometriosis. As long as you are having monthly periods, endometriosis can return along with all the disruptive and painful symptoms.