bluesmd, congratulations, really, for sticking to it and going through with what you love, even when others told you to just give it up. If I were you, I'd go back to the advisor's office and just tell them where to stick that acceptance letter. But that's just me. I would advise you to tell them, though, that you got in. That way, they will think twice before telling the next student that there's no way in hell they'll get into med school. Because, let's face it, not everyone would've continued to apply and study for the MCATs like you did. SAVE THE NEXT WAVE OF FRESHIES!
I don't bother going to the advisors we have on campus. I don't know any pre-med student who actually does. The most help they ever did for me was to change my major (though it was their fault they had to change it in the first place). The level of help you get from your advisors all depends on how large the pre-med population is at your campus and how many advisors are available to service them.