Help?

Okay ladies 
​This is driving me nuts right now.
​My chart shows that indeed I "O" on 06/17 since my bbt was 98F and followed by 3 days of high temp after the 6/17. I got a positive opk or what I thought it was a pos on 06/17, 06/18, and 06/19. And today my temp dropped from 98.4F to 98.3F and I took an opk just for the hell of it, and I got the darkest opk I ever gotten in 2 months TTC so I am so confused. 
​this one is the dark dark opk 
 
And these are from the 06/17, 06/18, 06:19, and 06/20