I have had back issues for 35 years, starting around the age of 30. There have been a few times when I was absolutely convinced I would need surgery. 3 years ago MRI showed severe disc herniation, with floating pieces of disc. Along with that was severe sciatic pain, and weakness in right leg to the point I could barely walk, with a cane. Well, actually an 8 iron...Pain doctor was pretty darn sure I'd need the knife, but just to get me to the point that I could move, and pursue physical therapy (PT) he did a procedure where he injected steroid and anesthetic into the affected nerve root. That and PT gave me so much improvement, I avoided the surgery. 2 1/2 years later I had a similar event on the other side, although not nearly as severe. I did not have the nerve block, but did to back to PT...it took a few weeks, but I got better.
So, my advice to you is to see a pain doc, and usually the best ones are MD, anesthesiologists, sub-specializing in Pain Management. Get an MRI, and a specific diagnosis. If you and your pain doc decide his intervention would be helpful, do it, then go to PT. Avoid surgery if you can. You just won't know until you've spent 8-10 weeks at it. In my case I knew after 4 weeks I wouldn't need surgery. Wasn't "all better", but was enough better that surgery was a no-go.
Best of luck, and if you need to PM me to hear more of how things have gone for me, non-surgically, feel free.
edit: BTW, I had another MRI last summer when I was going through that second episode, and the "floating" piece of disc that was evident 2 1/2 years prior had resorbed (i.e. got eaten up by the little cells we have that are supposed to do that stuff)...