I've Been Having This Back Pain For About 4 Years

I've been having this back pain for about 4 years now. It hurt all day, but anytime I try to lay flat on my back its horrible. It gets worse when I try to lay on my back. The pains like a stabbing, burning, throbbing pain. My lower backs swollen. It gets so bad sometimes I can barely move, sit, bend over. It hurts down into my hips also sometimes. Whats going on?