I Want To Know What Is Wrong With Me. I

I want to know what is wrong with me. I can't sleep at night. I stay up around 4am or 5am. Sometimes i don't feel sleepy at all. I got no motivation. No motivation to wake up no motivation to go to class or to do work or do something in general. I just want to stay on my bed all day. It stress me out. Sometimes i feel down all of a sudden. My emotion are all over the place. Sometimes i feel like maybe it will be better if I'm dead.