It does sound like you have issues that you need to talk to a proper professional about... can't say if it's schizophrenia, or some other type of psychosis, but it does sound like you're somewhere on that spectrum. It could be that this is something that will get better as you mature though, whatever you end up being diagnosed with, don't see it as a life sentence. You're only fifteen, you have a lot of life to live, a lot of things to find out and adapt to. Keep fighting through. Even if you get diagnosed with schizophrenia, it's not the end of the world.