AF really late, keep getting BFN

Maegan • Mom of 3
Hello! Can anyone give me a little insight? Husband and I have been TTC for 7 months. I stopped BCP last May. Since then cycles have been 35-45 days long. I'm currently on day 58 of this cycle with nothing in sight except minor cramping once or twice a day. Tested on day 45, 50, and 55. All BFN.  Anyone else have this kind of experience? Thanks!