Hi HannaJane I can totally understand where your coming from I think we all have periods like you describe. I find stress is a major cause of pain in crps but I hope you get through this quickly and find some hope again.
When I was at my lowest I turned to drink which was very destructive for me and thought I would never smile or laugh again but you will find an inner strength to get out of this feeling .
I know it's hard to imagine at the minute for you but you WILL come through this and be stronger for it.
Geordie