I don't believe Minnesota has a medical marijuana law, but even if it did I doubt it would have any effect on your situation. For the most part, the medical marijuana laws don't override other laws/rules such as employer drug tests, parole drug tests, or even rules rental companies have against drug use. I would try my best to stay clean if I were you, but it would be a good idea to see a doctor about that and maybe you can get something prescribed that will help without risking being incarcerated. Good luck!