help me please .. I've been ttc for 12 cycles now

Sheereen
I have short cycles .. 26 days and glow always predicts af to come 2 days after it actually does, even tho I updated it in my bio ... so I assume I o ulate 2 days befor glow predicts also?? I'm so fed up wasting tests and crying over bfn.. and Im also just about obsessed reading your ttc stories. I think I'm going crazy now .. 
My boyfriend will. E away for another 41 days and I just got a BFN again .. I'm so pooped