You don't take some meds bc of your psysical health but you are planning to take drugs from the street...i can't see the good thing in all this.

Look, I only made a search about one of the drugs that is considered less harmful, that is, marihuana and they say it can induce psicosis.

I'm not the right person to give you an advise bc my meds are giving me some effect, so I don't know how hard is to be in your skin, but please, think it twice.
New meds are being produced each day. I know they are expensive as hell but it would be better to take some under a doc prescription and revision.

Have you told to your psychiatrist about how you are feeling these days?