Wow, so many wonderful responses! Thank you all for taking the time to comment and give advice and understanding. It can be so frustrating to be reaching out and not have anyone to hold on to. I'm happy I found this place, and that there are so many people willing to help.
The ER isn't really a viable option because unless you're having suicidal thoughts, they essentially give you a small dose of drugs to get you going and then send you off with a list of potential people. I did a ton of Googling, and I have a list of people. But when I call them, they're booked out for weeks or even months!
Partless - Thanks for sharing your experience. I did take your advice and call my GP (again) and he finally had one of his nurses call back to let me know that he was sending an Ativan prescription to my pharmacy, so hopefully that will tide me over until I can find someone to work with me long term.