Ok I might be thinking of something else, but doesn't alcohol reduce the thickness of your blood? If it does then it's probably not a good idea right away because then you might start bleeding and the stitches might get fucked.
But if it's been a couple days then you might be fine. That is, if you're off the meds.
Hmmmmm now that I think about it I drank while on some antibiotics and I felt SO gross in the morning. Not hung over, but like my insides were gonna explode. And I couldn't even eat a single dad's cookie. I was fucking starving but I couldn't eat. Worst shift at work ever. Be careful man. Don't drink unless it's a night you absolutely can't miss.