Uterine Fibroids or Uterine Leiomyomas or Fibroids are smooth muscle tumors of the uterus. Most ladies have no side effects while others may have painful or heavy menstrual bleeding. When Fibroids become big in size, they may push on the bladder making a continuous feeling of urination. A lady can have one Uterine Fibroid or many. Fibroids can cause Infertility. Symptoms of Uterine Fibroids are heavy menstrual bleeding lasting more than a week, pelvic pressure or pain, frequent urination, difficult in emptying the bladder, constipation, leg pain and backache.