no one can tell you if you're an alcoholic... that's your call to make. if you think you might have a problem, try stopping for thirty days and see how you feel. there's a lot to be said for trying to quit - it was when i wanted to quit, and found out i wasn't able to stop, that i realized i was an alcoholic. so, maybe you are able to stop when you want... i was not able to do so. i started going to AA because i wanted to quit drinking and stop treating people the way i had been, and it has been incredible. i haven't found it necessary to pick up a drink in 2 and a half years, by the grace of god and the program of action outlined in the book Alcoholics Anonymous.
so, give it a shot. good luck!