Undiagnosed Pain In Hip And Side

Can anyone help me ? On and off for ten months I have had pain in my side it is now a constant pain in my hip which is aggravated by walking and lying on my left side if I walk more than one hundred and fifty yards the pain radiates into my side and becomes extremely severe and walking is very difficult until it passes I have had hip and back x rays an mri scan and am awaiting results from a bone scan, am taking very strong pain killers but when the extreme pain comes on it doesnt touch it are these symptoms familiar to anyone?