Opk/ ovulation question.

So this is mine and hubby's 9month trying. But this is our first month tracking bbt and cm and doing opks. My OB told me to do opks once a day with fmu. I'm curious if I should test twice a day, once fmu one after lunch? Below are copies of charts on 3 different apps. All predicting ovulation at different times. And the first one are my opks. Please. Any and all advice will b taken under advisement. I have a cycle buddy and she thinks my surge will come soon. She only tested once a day and now she's expecting :) hoping this is our month. The last two pix are of a fortune in a fortune cookie I received yesterday. Funniest thing is if we do conceive this month then we will be due on/around 8/7. Check out the lucky numbers. Lol coincidence? Maybe.