truthfully height isn't usually the only factor. if a guy doesn't like you already then he may say that height has something to do with it to make you or himself feel better about it. if he is truly in to you then your height will NOT matter to him.
Yeah I'm short too... only 5 ft 1 lol... and I think it does put guys off, mostly in nightclub situations where nearly everyone is taller than you and it's even difficult to get a drink at the bar lol I used to get overpowered by taller males and females, and have a real complex about the fact that people were always looking down at me... but actually I have got with more taller guys than shorter ones... so it just depends on the guy.
I think it does matter though as you get older when men want a "real" woman. Petite girls are cute and girly but taller girls are sexy and mature. Being an older woman myself I can seehow attitudes have changed slightly, but I'm over it! Just enjoy being you!
No it shoudnt be Height really shouldn't matter and plus some guys like short girls just put your self out there if you don't you will never know ! for sure/ ;look I'm 5'1 and ,my boyfriend is 6'2 I am he woulnt change me and I also had this problem and he lovs me the way I am alll I had2 do was put myself ot there