Has anyone ever gotten a misdemeanor charge pardoned in Maryland?

I was arrested back in Aug 2006 b/c a person living in my basement was growing marijuana (which I knew nothing about it btw). I was arrested b/c I'm the home owner and I believe b/c of my age (22 at the time). The judge said b/c I was the home owner I should be aware of what is going on in or outside of my house, so he gave a PBJ (probation before judgement). There were about 4 charges, 2 felonies and 2 misdemeanors. I was only charged w/ 1 misdemeanor (Poss. of marijuana, it was in MY home, my home is MY possession). Didn't really agree with that, since my neighbors son did the same thing and she didn't get arrested, but whatever, what's done is done now. Anyway, then in June 2007, while on PBJ, I did do something stupid, I went and got a prescription filled for a person that I knew had a drug problem, but didn't think anything was wrong w/ the prescription (a LITTLE bit better than street drugs I guess). Turned out the prescription was fraudulent, again I was arrested. This time there were about 3 charges and I was only charged w/ 1 which was Possession of a Fraudulent Prescription. Then of course I violated my probation, which my PBJ turned into an actual guilty plea, was out on more probation and House Arrest, which I just got off of 3 weeks ago! No one has really told me if the 2 charges I got were misdemeanors or not. I was also told that I could get 1 of them pardoned by the Governor of my city in Maryland. I've been trying to research but still not finding my answers. Can anyone give me any info about this? Have you gone through the same thing?? Sorry this is so long but I want to make sure it's detailed :) Thank you!!!