Feeling so so disappointed

We started ttc march last year, two miscarriages later. We went through many tests after the MCs and results came back that everything is normal. Finally we started to ttc again- and now out of no where I've started spotting mid cycle?! What the heck? AF is due Monday but I did an early pregnancy test today  and I'm not pregnant. I don't know how much more of this I can take!