day 39 of cycle negative tests

Cycles Usually around 28 days give or take a couple of days   So last month cycle was 34 days I thought I was Prego then AF showed up!    so this month waiting for AF to show and and still nothing.  This has been longest cycle!!   Two months ago  I started to working out lost total of 30lbs prior to me working out and spotted but I just thought it was me ovulating nothing big!!  With negative tests and cycle days keep going by I'm not sure what to think or how to keep my mind off of it?!? Anyone else have this same thing?   And did anyone ever get Prego  how late it show BFP?!?  Some blogs I've read some women didn't test positive until cycle day 50