I just want to say i really feel for you!
My mum hurt her back a few years ago at work and her's can't be fixed. She is in pain all day every day and is on morphine patches 24/7 plus other pain relief. She has tried everything too. Chiro's, physio's, surgeons, pain management courses, rehab and there is nothing that can be done for her. They are talking about injecting some stuff into her back to try minimise the pain though. But it doesnt sound good.
Anyways i just wanted to say hang in there you will know more after an MRI and good luck!!!