Micro,
Glad to hear that you're improving. Just remember that the shots may not have actually "fixed" anything - that they're more just blocking the pain - so you be extra careful not to over-do it!
You might also try out an air mattress. I know that there are some good ones out there.
I have a really cheap one that I can travel with - like when I go to camp - things like that - and if the good ones are anything at all like my cheap single size - they're worth a good hard look. I love sleeping on mine when I'm away from home.
If I could get my better half convinced that they won't spring a leak like the old ones you used to be able to get for camping, - you know - more of a glorified pool mattress - then I'd replace my TempurPedic with one in a heartbeat.
My back is not as serious as yours yet - but it's definitely telling me that I over-abused it back when I entered the "man's" world of the workforce. And it definitely likes the air mattress.
Just food for thought.
Sun :-)