Question! Help!

Took an OPK around 10:30 this morning that showed peak fertility (clear blue digital) then out of curiosity  around 10 pm I took another one that said low fertility. So, did I ovulate in between? Test too early in the day?Also, how would you log that? As peak or low? 
*yesterday I also tested peak so I assumed I would ovulate today anyway. 
And lastly, I had sex after the low fertility read tonight. Which is still ok right? That egg should still be chillin in there, right?
Thank you thank you thank you for any answers you can provide!