OPK - help understanding when I ovulated?

[LuckyFlutter]

I tested on Sunday late pm and got a very dark result - darker than the control line.

Monday I tested a few times and all were close to control line so positive.

Tuesday = Tested AM - white negative.

So when do you think ovulation began?

Sorry I haven't quite got my head around opks yet

 

[LuckyFlutter]

I'm wondering if Ov began the second day I tested - same as control line as it had lessened from the one the day before which was super dark (darker than control line)

 

[Lilllian]

I was looking into the same today and found this article..https://www.babymed.com/lh-surge-and-sex

 

[LuckyFlutter]

Thanks I hope I timed it right. BD'd early hours of Sunday morning