When do opks lighten after ovulation?

[Lushy1]

I had my peak on CD14, they dropped on CD15, and today they are rising again? I haven't been temping so cannot be sure, but i had cramps on my left side yesterday and the day before so I am assuming one day was ovulation or likely to be?

I dtd last night and CD 11.

I’m no expert, but I’ve read many times that you can have more than one LH surge through your cycle.
At your first LH surge your body was gearing up to ovulated, but it may not have ovulated and now it is gearing up to try again.
Keep testing, keep an eye on CM and DTD every other day to cover all bases.
Good luck!