Brown discharge, AF 2 days late, BFP?

So, my period was due on the 27th. It is now end of day on the 29th. About 2/3 days before expected AF I started getting tiny amounts of brown discharge, only when I wiped. All day yesterday and today I've been getting mor brown and rust colored discharge with like fibrous stretchy brown stuff?? I took a pregnancy test and bfn. Is my period just late, or is there hope for a bfp? I do usually get a day or too f small amount of brown discharge, but not this much or for this long. I had a miscarriage at 6 weeks on February 27th. So this is my second full cycle of ttc... if this month fails we will move on the our third cycle!