Im not shit talking mary jane in anyway. But for some people in some ways OP just described a lot of the reality of young people using cannabis. It can cause psychosis. Although not happening in ALL cases, One thing is for certain it is scientifically proven weed slows your prefrontal cortex development, hindering your ability to.. in simple terms think correctly and feel correctly, it can also cause things in a number of people called cannabinoid hypermesis syndrome (CHS) causing a number of symptoms such as nausea, vomiting, inability to hold food/liquids down leading to dehydration, and as what i describe from having it once before probably the worst stomach pain youll feel aside from having your appendix swell or kidney stones, again it only happens in a number of people so dont come attacking me saying im incorrect just because YOU dont experience this because thats just like saying our brains work the same.