I'm sorry CC, that's so unfair and must be freaking you out

Mine seems to be spreading fast at the moment too, for no apparent reason at all, and you do feel like you are being taken over piece by piece... I had the 'why me's yesterday, it just felt so overwhelming.
Don't give up hope, ok? And don't blame yourself for making an impossible decision - hospital might not have been the right answer, and I don't think either was an easy choice. I'd have gone for the shot as well, if that's any comfort. Can us go and see your main doc and ask about some different treatment options, meds, pain relief or treatments? It's not right that you have so much pain.
I know I say this a lot

but do some deep breathing exercises if you can, just to calm you down a bit. I use them a lot to get control of the panic or just that tightness from holding on to the pain. They do help.
Take care of yourself and get some help wherever you can. You deserve a break.
Bram.