peak ovulation period 3 days later ?

Kim

On Nov 10th I had peak ovulation w clear blue digital (after testing for a week w a flashing smile then solid). Then on Nov 13 th I started my period and it's 3 days later I am still medium bleeding. How is this possible? I'm just going with it and resetting dates based on starting on the 13th, 2017. CD1..any thoughts here ladies?