Feb 22, - Why uterine fibroids are unique. Depending upon where they form, their size and number, they can cause a variety of symptoms. Discomfort during intercourse is one possible symptom, while heavy or irregular menstrual bleeding and muscle cramping resulting from fibroids also can interfere with your sex life. Apr 4, - Uterine fibroids are a type of solid tumor. These symptoms may include heavy menstrual bleeding, pain during sexual intercourse, and pelvic.