I feel like tomorrow I'm going to feel guilty and hate myself for it but is that considered a relapse? I stopped when I could have got drunk and I came home to prevent it. I feel responsible and guilty at the same time?
Well, it's "tomorrow"...how are you feeling? Still questioning whether or not you had a relapse?
Since it's a One Day At A Time program, I'd concentrate more on how I'm going to not drink TODAY. I've often heard that the alcoholic is "mentally drunk" before he actually picks up the drink. Could be you had/have reservations about whether you truly are an alcoholic? No one can answer that for you but yourself...not anymore than anyone can tell you whether you should consider that you had a relapse.
BTW...do you attend any meetings? Do you have a sponsor? Exactly what else are you using to stay sober besides sheer will power?
I wish you well...and sobriety...