I'm very angry because I missed bbt and strips on CD 16 due being away from home on Saturday night.. So I need uour help!!!

Ovulation strips on Cd15 early noon (13.00) said high and strips on CD16 afternoon (16.30) said negative. So I think I might ovulated on Sunday morning CD16 cause I felt extremely sharp pain on left ovary and cramps for an hour and that was it. But FF said ovulation on CD14 according to CM... I don't know what to think. All opk strips from CD 16 and then were negative. The highest I got was on CD15 early noon... Please some opinions please! Thank you ladies!!!