this month i was 5 days late (after thinking i might be pregnant due to having all symptoms) then AF showed up, first two days it was only slight spotting, day after that nothing, day 4 it was very heavy flow, day 5 (period is usually only 5 days) it was very light. day 6 totally gone, day seven totally gone, and today she made a hard visit again... this never ever happend to me?? what could it be?