I think there are warning signs that indicate you don't handle alcohol like a "normal" person would...drinking alone, hiding or lying about what you drink,driving while impaired,spending time with drinking friends and not having much time for non drinkers,outwardly denying you have a problem while you're convinced inside that you do,having a hard time setting limits on number of drinks you have,etc.
The fact that you went to an AA meeting indicates that you think that you are, and are ready to deal with it. I applaud you for this. I know I'm well on my way, if not already there, and have never attended a meeting. That takes courage!
I think it's possible for people to be social drinkers, it's just not possible for alcoholics to be social drinkers.