I agree- reaching out here and sharing the load is a big help; for me anyway.
I do think you need to keep the hospital as an option in the back of your mind. I've been in the depth of depression and done some stupid things- I should have been in hospital.
I'm sorry your pdoc cannot see you earlier. Maybe stress the fact that this really is an emergency. Or can your T get hold of him and explain the situation?

Hang in there- we're here for you, and care for you lots. Xx