i sometimes hear random voices out of no where like in class today i was sitting there and behind me i heard a friend call me ugly but he sits 7 rows ahead and once i was in the shower and heard voices like telling me that he knows my name but i know this is all in my head and not real and ive been extremely anxious like when im in a resteraunt every time someone laughs or has a conversation for a second i think their talking about me calling me names but then i realize its just in my mind.
DO NOT self-diagnose. See a psychologist about it. Never just assume you have a mental disorder, you need to be officially diagnosed by a professional first.
Only a psychiatrist or a clinican could properly diagnose schizophrenia. From what you're describing, it seems that you have some paranoia and anxiety. How old are you? Are you male or female? Are you on any medications? I would recommend talking to a school counselor or visiting a local health clinic for more information.
This could be a number of things. I recommend seeing a doctor.