Please explain my hpts?

Lovely • IG: Plentifully.day TTC #4. Sept 2014 tubal reversal. Feb 2016 HSG: blocked tubes. May 2016 IVF: failed. Aug 2016 BFP turned to 4th loss
I peed in a cup, frer looks negative I got so sad but did the digital anyway and that says pregnant... What do I believe? Why is frer negative? I tested with frer Wednesday and there was a faint now nothing, I'm scared