OPK Help!!!

Nira • Wifey.Mommy.Happy
So I decided to try using opk this Cycle......
​Silly me, didn't realize I was suppose to start testing on CD 11 (I'm not on 15 I think) I thought I could test whenever and it would let me know lmao hahaha ?????
​So the thing said I wasn't fertile at all 
-_-  but I wonder if it's just because I started late so it was messed up lol, this is what it looked like: