Heya! I've never posted here before because I am pretty much a loser when it comes to health and nutrition, but sciatica I know well...
I am not sure what you have is sciatica, but it can manifest differently in different people. I had it with both of my pregnancies (yes, I realize that is not going to be a problem for most of you) and it was basically a stop-you-in-your-tracks stabbing pain in the low lower back (like, top of the crack area) that shot pain and numbness down the back of both legs. The only thing that kept me walking was twice a week trips to the chiropractor - I think I must have bought that guy a beamer with what I spent. If you've got a nerve pinch, that is a mechanical/functional problem, so a chiro is going to do better than a Dr, but that's my opinion.
He also gave me a stretch that helped - the one where you stand with your back to a wall, about 18 inches away, then twist and place both hands on the wall and hold for 30 seconds, then do the other side. It hurts like hell at first, but you should be feeling better after a few minutes.
Do take it easy, listen to the pain, and treat accordingly - you won't be helping yourself if you just push through it.
And I didn't do ART for it, but my hubby did for some other problems and he swears by it. Might be worth checking out.
BTW Soju - do you go to SPC in Mississauga for your treatments?