Late Ovulation?

Amber

AF is 3 days late, but got a BFN this morning. Not sure when I ovulated this cycle because I was not consistent with my tracking and decided to not stress about TTC this month. With my last pregnancy I ovulated around CD17 and got my BFP at CD28. The last few months I’ve had inconsistent cycles, and I’m pretty sure my ovulation varies quite a bit each cycle. Planning on using OPKs next cycle to get more accurate info on when I ovulate, but do you think there is still a chance for a BFP this month? Also anyone have experience with varying cycles and ovulation days?