The morning-after pill may help shrink painful fibroids and relieve excessive bleeding, new research indicates. Fibroids are benign tumors that form on the wall of a woman’s uterus; as many as 80 percent of all women may have fibroids. Many cause no symptoms, but one in four women experiences symptoms that are severe enough to require treatment, according to the National Uterine Fibroids Foundation. Symptoms may include heavy periods, anemia, bloating, constipation, infertility and miscarriage. Treatment may involve surgery to remove the uterus and/or hormone treatments such as Lupron (leuprolide) or oral contraceptives.