RA and back pain

From what I've read and heard, RA mostly affects the "small joints".  SO, I am wondering if the TERRIBLE lower back and hip pain I have is RA related.  I have never injured my back, and have had an office type job my whole adult life.  I had an MRI of my spine 2 years ago when they thought my RA was MS and my spine was normal.  A regular Xray showed a "bone spur" and normal Osteoarthritus prior to being diagnosed with RA.  I had gone to an alternative Doctor who was also a Chiropractor to the tune of over $5K my back was better, my RA was worse and the "supplements" were exspensive and not helping, so I stopped going.  Now, the back pain is back and horrible...so I am now wondering...the RA in hands, feet, knees has gotten so much worse of late, could the lower back now just be part of the RA kicking in???  Also thinking that just maybe my back gets bad when my feet and knees get bade because I walk or shall I say "limp" wierd and throw my back off balance??  Anyone else have back issues that are RA related?  What do you all think of seeing a Chiropractor, does it help for RA related back pain?

On another note...I am so grateful to have found this site.  I have so enjoyed the posts by Amy and Lene and everyone else too.  What a relief to have this outlet and support.  Thank you all!