But I didn't even get drunk

I’ll try and make this As brief as I can, ha.
I’m 2.5 months opiate free. Opiates were always my drug of choice and the only one that I became addicted to. I partied a lot when I was younger. Never to the extent that it threatened my stability or anything extreme. Just your average party kid. As I grew older, recovering from a party became harder and harder… hangovers for days. (We all know this.) So, needless to say, I lost my desire for it. I drink a coupleee of drinks here and there, at a show or something. (Drinking was Never an issue for me, though.) For awhile, if I only drank a couple of beers, id feel fine the next day. But now that I am off opiates, even if I drink just a couple, my anxiety the next day is through the roof, I feel guilty for some reason, I forget bits and pieces even if I was not intoxicated. It seems to be worse if I have a couple of beers in a public setting rather than in a house with minimal company. It’s just weird, to me. Thoughts or stories?