Misconception: Endometriosis occurs when the uterine lining grows outside the uterus. One hallmark symptom of endometriosis is pelvic pain, which can occur before, during, or after your period; during sex; or really any other time. If you have endometriosis implants in your lungs or diaphragm, you could even experience shortness of breath. “There is no certainty that a hysterectomy will rid a patient of their endometriosis,” Dr. Harry Reich, a pioneer in the study of endometriosis and a mentor of Orbuch, told the Endometriosis Foundation of America. Endometriosis patients who suffer from severe pain are often prescribed medication that help alleviate it.