I can relate to a lot of the stuff you are talking about

i have used pot, and adderall a stimulant as daily drugs for some time,
i stopped smoking weed altogether now for about 2 months and still use adderall to some excess. Also have used shrooms, opiates, and coke occasionally.

I do know that drugs played a part in my psychotic episodes.
Periods of psychosis: hallucinations, delusional thoughts

for a long time I thought of myself as mentally ill, it hurt me so much because I thought I had so many different psychological disorders.
Including schizophrenia, anti-sociality disorder, I also thought I was a hypochrondriac. I would just think about how everything in life was fake. Like the movies, I completely understand how you view movies and tv shows and how they are fake. Just criticizing how a movie was put together the editing, story line the sounds, voice overs just every little part. I also would here voices before I went to bed but voices that I could recognize for the most part but the voices were saying things that wouldn't make sense and before I could really think about what the voices said I would not be able to remember what was said.

I have reoganized my thought on this subject completely

here is my conclusion and a theory for schizorphrenia
"the mind is a very powerful thing"
what you make the mind believe is what the mind can become,
how I got over thinking I was schizo was just to ignore the fact I was,
i just think that the uncertainty of knowing if I was schizo was making me go even more over the edge. So I came up with rational explanations for things ex:-the voices I would hear at nite, it is just me having stimulated brain activity before I slept, just like dreaming while I was still conscious.
I just basically quite worrying about it and the thought went away completely. I also noticed that whenever I watched a movie or something about a disorder like fight club or something I would question myself about if I was like that. I am very intrapersonal and analyze myself a great deal. I just small symptoms of a disorder and blew them out of proportion.

Just dont think about it to much cause I think that your doubts can bend your perception of reality and your own state of mental health.

I now have no question of my mental health now, where as a few months ago I could not even imagine how I could even feel as mentally unstable as I was.

Hope this helps
kword