Sounds like you've got a couple of things going on, if you've got pain both down your leg and in your shoulder and down your arm. If it's discs I would of thought it's a couple of different discs - one high one lower.
What have you tried doing to ease it?
I find various exercises can work, but you have to try different ones and see what feels good for you. This area of the forum has various back pain exercises, including some yoga. I'd never done yoga until recently, but liked it and found it helps.
L4-L5 Herniated disc, L3-L4 mild bulge, L5-S1 Spondylolysis