SYMPTONS::::AUB is unpredictable. The bleeding may be very heavy or light, and can occur often or randomly. Symptoms of AUB may include: Bleeding or spotting from the vagina between periods Periods that occur less than 28 days apart (more common) or more than 35 days apart Time between periods changes each month Heavier bleeding (such as passing large clots, needing to change protection during the night, soaking through a sanitary pad or tampon every hour for 2 to 3 hours in a row) Bleeding that lasts for more days than normal or for more than 7 days Other symptoms caused by changes in hormone levels may include: Excessive growth of body hair in a male pattern (Hirsutism) Hot flashes Mood swings Tenderness and dryness in vagina