OPK help...

Blair

Tested positive on my opk test yesterday night, hubby and I have had sex the past 3 nights..supposed to ovulate today, tested and super low negative. Did I already ovulate? I did have cramping last night that I usually get while ovulating. Super confused. Can anyone explain it to me a little better?? The app showed I was Ovulating today now it’s showing I’m ovulating in 2 days. Super duper annoyed.