Miscarriage or 4 false positives

I am feeling so down right now we have been trying for a year now.. and I found out I was pregnant.. I told one of my closest friends about it and they acted as if they were happy for me.. for the next few days I took a pregnancy test couldn't believe I was actually pregnant but I realized the line was getting fainter each day tell last Tuesday when I took one a week later and there was no line.. I went to the doctor but all they could tell me that i was no longer pregnant... and now these so called friends of mine are acting like I was faking the whole thing... I am so hurt... Maybe it was 4 false positives or maybe it was a misscarge but I'm still hurting especially since I got my hope up.. I am so torn