What do these things mean(for real , it has been going on too long )?

Auditory halucinations, and paranoia. I would be very concerned, and I see that you are. FOR NOW, just try to keep up with school, eat better, excersize, do some relaxation exersizes in your mind,before u try to sleep. Tell yourself you are okay, and productive..and that these fears and voices are nothing but stress..( and they really could be). If in 6 months, u have not improved, think about seeing a pyscologist.