I don't really have any experience with the facial problems you're having, but it just amazes me how similiar we all are in our behavior. I just found this site last weekend, and it's already helped me so much, because I'm realizing that there are other people around that deal with the same things!
I have always scheduled and then canceled appts when feeling well, only to regret it. Last weekend I ended up going to Urgent Care because of my heart fears, and they specifically told me that that is not the place to go for anxiety related issues. Well, if it wasn't a Sunday, I wouldn't have gone there, but I was going to lose it if I didn't do something!
I think it just helps us to know we're not alone in this.