I remember a few years back going to an earlier opener pub, knocking down a few beers, & then turning up to work. Got caught, of course, & I still have no idea how I didn't get fired.
As if that wasn't enough, even though I knew I had a drinking problem, I'd know for years, of course, I didn't learn the lesson. I just waited to get the inevitable warning from the boss, & for the "heat" to blow over, & I kept drinking.
As was said earlier, what's happened has happened, & you'll probably have to face the music for that, but it's super-important that you get something in place in terms of where you're headed.
Best wishes AR, hope it sorts itself out quickly & as painlessly as possible.