I had similar, and got some treatment from a chiropractor, seemed to do some good, after a few visits I ended up in hospital. There is nothing they can do, manipulating the spine aggressively will make it worse. I found that a general light massage (muscle)worked as well or better than 'black art chiropractors'. Be carefull, it doesn't take much to get from where you are now, to where I was. The worst pain I've experienced, thumping pain in legs, buttocks, lower back. I had to eat my breakfast kneeling as I could not sit at all. It was hell.
PS: It takes a year to recover when it gets like that, and that was a year ago for me. Last weekend I entered a race, really pleased with the result. You need an understanding partner, which I didn't have at the time, who is patient and willing to help with light massages.