miscalculated? help!

Taylor
So I thought I was 4 dpo because I got a positive opk (for sure positive) on cd 14 which is early for me but i figured my body was finally gunna be normal. I've tested everyday since cd14 and all opks have been negative. Well today cd18 I got this opk. I typically O between cd17-cd19 so do you think this will be my real positive?? Thanks!
EDIT: below is my test from cd14
Tia!