40+ day cycle and bfn

Donald • TTC baby #1. Off BC since July 2014. Cycle irregular

So my girlfriend and I are trying for a baby, this cycle seems much different with the symptoms but glow says she was due AF on Tuesday and other apps day Saturday.

Anyway we done a clear blue test and came up bfn.

Is there any hope for this far down the cycle to have a bfp? Her AF last came on 11th May