I hurt my back about a year ago doing some deadlifts.. The pain starts on my lower back and is two inches above my butt and 3 inches to the left of the spine.. The pain radiates through the butt, down the back of the leg to the ankle. The pain doesn't stay in one spot and I've never had shooting pain down the leg. I've had Dr's look at it and of the three I've seen none of them say its the same thing. 1 said PS, another said disc, the last said it could be SIJD.. What do my symptoms sound like?