Missed AF, Positive opk, BFN

Desiree • Dahlia 03/28/15💛 Frankie 03/22/19🧡 FJI7617🫀

So AF was supposed to come June 2nd. Did an opk on the 5th and it was super dark. Took an hpt 2 days ago and got BFN. Still no sign of next AF. I have an appt with my OB next Tuesday but I’m just so confused as to what’s going on.