Hi Bee, I just wanted to say that I know how you feel, we've all been there. This is a great forum. I have been depressed about having celiac too. When I go somewhere I often bring my own food. I do think it makes people feel weird, but I would rather risk offending someone than chance getting sick by eating their food.
I also still go to dinner with friends and if I know in advance I won't be able to eat anything at the restaurant we're going to, I eat before I go, and I just order a drink. It's awkward but I explain to people that I'm very sensitive to even a breadcrumb and I PRETEND that I don't mind just ordering a drink and eating beforehand, so that puts them more at ease.
Yes, inside I'm pissed off that I have to haul my own stupid food with me everywhere or eat BEFORE going to dinner, but that's just the way it is and I'm trying to be more accepting of it. :/
My only other advice to you is ... listen to IrishHeart's advice. She's awesome.
And there are a lot of other great people on this forum who have helped me too.
Hang in there.