Clear Blue Advance OPK Anyone?!??

Ladies, are any of you familiar with clear blue advance ovulation test? This is the one that gives you 4 days of fertile days. I recently decided to stay using it- starting on cycle day 6, well I had 2 days of empty/circle. Then on Thursday I had a flashing smile, backed by soft open cervix and medium to heavy ewcm!! This morning I tested, and I had the static smiley - so I peaked. I got one day of high fertility - peaked today... Now I a wondering how long would someone ovulate after they get the peak? Thanks all!!