21. Once filled, the balloon conforms to the endometrium, the uterine lining and the primary source of menstrual bleeding . 22. Because of prolonged menstrual bleeding , she next went to Kaiser Permanente West Los Angeles Medical Center for treatment. 23. The first step in treating excessive menstrual bleeding , specialists say, is to figure out exactly what's causing it. 24. The first day of menstrual bleeding is the date used for the last menstrual period ( LMP ). 25. Megace is a synthetic progesterone used to treat breast cancer; possible side effects include weight gain and menstrual bleeding . 26. Heavy or lengthy menstrual bleeding , called menorrhagia, can be caused by benign tumors known as fibroids in the uterus. 27. The progestin containing intrauterine device can reduce heavy menstrual bleeding and protect against pre-cancerous changes or cancer in the uterus. 28. But in some women, untreated fibroids may continue to grow, or cause excessive menstrual bleeding and pelvic discomfort or pain. 29. Three of the women, one of whom had not had a period in 14 years, ovulated and had menstrual bleeding . 30. The most common side effect, one of several spelled out in the product's packaging, is a change in menstrual bleeding patterns.
