Is this bad??? i feel weird doing it...?

Okay well it sounds like you are getting around and it's getting really complicated. I think you should break it off with anyone who you don't like emotionally. If it's just for sex then that could give you a bad image. Keep to guys that will treat you nice, love, you, care for you, and don't just want you for sex because those are going to be the guys that are going to stick by you until the very end.