Help me with legalities

Well, I started smoking about 1.5 years ago, due to extreme pain and muscle spasms, nausea, anxiety,PTSD, panic disorder a whole list of reasons that I couldnt find relief with ANYTHING else. I was working on getting my card, until my hubby and I were caught on 12/1/11. I was put "under advisement" on May 10, told to take random tests once a month, and to take an impulse class. I paid ALL my fines, signed up for the retarded class, and took my first piss test about 2.5-3 weeks after i stopped smoking, which was dirty, expectedly. I just recieved a letter in the mail saying I have to go back to court on 6/19 because of "probation violation" first off, I wasnt even aware I was on probation. In fact, I was told by the court appointed lawyer AND the people I paid the fines too that I wasn't on probation. I wasn't given a officer to report to or anything. i simply got a paper that told me when my advisement started, ended, who was the judge clerk was, and where i needed to take my piss test. Ive done EVERYTHING right... so I'm sitting here freaking out on WHY im going back to court for probation violation. I was just diagnosed with Fibromyalgia,(FINALLY AN ANSWER TO ALL MY SYMPTOMS) and i was planning on getting my medical marijuana card, because marijuana defnitely doesnt have all the side effects of the handful's of pills I should be taking. Is this still possible? Anyone that can help me understand why im getting in further trouble? Im in an utter panic and need some help!