Erin - I'll agree that the moodiness does pass. Part of what made me realize I was working on a real problem was when I felt like I was happier/more outgoing/more fun after a drink. First few days without I was a wreck, but recognized it for what it was and just willed my self to shut the heck up, move on when things bothered me. After a couple weeks it got much better, after a month it's virtually gone for me. Could have something to do with getting real sleep.....
Hang in there - sounds like you're doing great and at least self-aware of how you're feeling. Whether it's 16 days or 60, it will get easier.