PW, I'm sure that your ARE scared, but I am equally certain that you can use this experience to fuel your recovery. There's a saying about an elevator...we need not take it to the ground floor; we can get off whenever we choose. It's a strange paradox about recovery: once we admit that we CANNOT drink, under any circumstances, we can begin to rebuild our lives, one brick at a time.
You didn't say, but hopefully no one was physically injured in this situation. If not, then that is a small blessing. Yes, you need to face the music, but this is also an opportunity to rewrite the score.
I don't mean to sound flippant or unfeeling. I would be scared as well. I guess what I am trying to say is that do the things you have to do, take responsibility for your actions and use this situation to change your life. You can do this.