Help - which day did I ovulate?

I got dark OPKs (wondfo) on Wednesday afternoon (not all the way as dark as the control but mine never get that way b/c I drink a lot of water and can't hold my pee long).

Had sex Wednesday night (for first time this cycle). By Thursday the OPKs we're very light, totally negative. I normally get 2 days of dark ones.

Did I ovulate Wednesday or Thursday???

And if Wednesday, could we have missed it?

TIA