I have GAD, and I am irritable a lot. With me, it's a certain view of the world like others are always judging me, or may judge me. This causes my symptoms...sweating, shaking, nervousness, irritability, some panic, etc. I really think my symptoms sound more like social anxiety than GAD, but pdoc and T are the experts I guess. If you feel like you might have a bit of anxiety, I think it'd be a good idea to keep your appointment. A little nervousness can turn into a full blown anxiety disorder in time, so you want to get help for it before your symptoms become worse. Good luck