It seems that you are in a difficult situation, however, if marijuana is all that works for you, the choice may be between that and a career in nursing. Not only would you likely be subjected to ramdom drug tests, but most schools, mine included require a clean tox-screen with your pre-admit physical. Even if this weren't required, please consider the liability to you, the hospital and most important, the patient. I know that you feel that you have no "high" side effects, but in nursing above most other professions, reaction time and a clear rational mind may be a life or death issue. I don't mean to sound as though I am lecturing you. I'm not. You seem to be a caring person who would feel terrible if anyone was hurt. That being the case, nurses using drugs is a VERY serious issue. I hope this helps.