Bleeding in any of the following situations is considered abnormal uterine bleeding:
- Bleeding or spotting between periods
- Bleeding or spotting after sex
- Heavy bleeding during your period
- Bleeding that soaks through one or more tampons or pads every hour
- Bleeding that lasts more than 7 days
- Menstrual cycles that are longer than 35 days or shorter than 21 days
- “Irregular” periods in which cycle length varies by more than 7 to 9 days
- Not having a period for 3 to 6 months
- Bleeding after menopause