A little down

I am not so sure what my deal is, but for the last couple days, I have really been out of it. I have found myself being very emotional and little things are getting to me. Things that normally don't bother me are bothering me. My feelings are being hurt so easy and I just don't get it. There are a ton of things on my mind and yet, I can't place what the things actually are or why I am bothered by them. It is the weirdest feeling ever. I have been doing so good lately doing all the things that make me happy. I am spending time with my friends, eating good, and working out. So what the fuck is eating me up!?