I have a pinched nerve(I'm assuming) in my back. I've had it for a couple of weeks now. It is absolutely killing me. It will feel okay for a couple days and then I have days like this morning where I couldn't hardly get out of bed. I don't want to go to the doctor. I've been told they will probably do an MRI. I can't afford that. Any ideas on what I can do to make it better before having to breakdown and go?