Abnormal menstrual bleeding refers to any changes or irregularities in a woman’s menstrual cycle. Here are five signs of abnormal menstrual bleeding: Heavy or prolonged bleeding: Menstrual bleeding that is unusually heavy or lasts longer than seven days is considered abnormal. This may involve soaking through sanitary pads or tampons more frequently than usual or passing large blood clots. Irregular cycle length: A regular menstrual cycle typically occurs every 21 to 35 days. If there are signif