I'm another fellow night owl
As a fellow newcomer too, all I can say is that every minute (even if it is just minutes) that you do not continue to abuse is a plus. You slipped, but at least you felt guilty about the slip. At least you won't be taking anymore meds tonight.
Today is my 5th day without cocaine, but I have slipped so many times in the past few months. I almost slipped today as a matter of fact because weekends are my weakest time. I went to an NA meeting instead and have to say I am glad I did, and feel a little more at home at the NA than AA. Like others have said, you just have to try a few meetings until you find what is right for you.
Keep your chin up. Glad you got rid of the rest of the pills, I had to do that with all of my little "stashes" of cocaine. It's sad, but I even had to put the mirrors I used to use in the trash because I didn't want to deal with the urge to lick them. Pretty sad huh?