If AA worked for 5 years, what makes you think it won't work again? I am not in AA but 5 years is a pretty good run by any measure. I'd call your sponsor - the pity/shame/fear of failure is a normal response, but as we all know people relapse. Seeing the addiction specialist probably wont' hurt either, but as you probably know only YOU can confirm that you are an alcoholic, no one else can do that for you.