So they didn't give you an antipsychotic that sounds bizarre to me. They must have assumed you would become less psychotic as the drug cleared your system unless you are still smoking. If you are then you need to stop to figure out what's going on. Pot typically exacerbates psychotic symptoms. So you could have just drug induced psychosis and that is a diagnosis itself or you could have something on the schizophrenia spectrum. Are you still hallucinating/delusional? How long did it last?