ovulation confusion

Stephanie
According to Ovia, my fertile days were CD8-CD13. Which puts my O at CD 12. But here are my opk results:CD 10 low (clear blue advanced) neg cheapCD 11 high (clear blue advanced) neg cheapCD 12 peak (clear blue advanced) neg cheapCD 13 peak (clear blue advanced) pos cheapCD 14 low (clear blue advanced) pos cheapDidn't test today until after work. Originally my ovia fertile days were CD 10-CD15 but changed when I got the high or peak can't remember.So which day do I count as actually O day? Idk what to go by