Clearblue advances digital OPK HELP!

Brittney

5/29 - negative

5/31 - high fertility (blinky face), BFN (not fmu)

6/1 - high fertility

Currently cd 39 no af symptoms and 6 days late. Been tracking ovulation with cheap DrKea opk tests; big fail didn’t get one positive for 3 months.

Cycles normally 28-33 days.

Thoughts? Am I ovulating very late? Preggos?