Which day did I ovulate?

Ce

Do you agree that I am 5 DPO? I had a very positive lh test on 31st, but unfortunately hadn’t checked for the two days prior because I thought I’d ovulated, and I missed a temp.

This app thinks I ovulated on the 31st but that’s the day I got the positive opk, I thought you ovulated 24-36 hrs after that opk. Unless if I’d tested before the test would have been even stronger.

Thoughts please?