Like broomhilda, I would definitely speak w/a rheumotologist just to be safe. I have had chronic lower back pain for as long as I can remember, and my GI told me at the last appointment that it is possible I could have ankylosing spondylitis (AS). He said he didn't want to scare me, but just to be vigilant of the symptoms. AS tends to be connected w/other inflammatory conditions, as do pretty much all inflammatory conditions. It seems you start with one and end up w/a few! If you look up AS, you may be able to see if you have any/all of the symptoms. Good luck!
Currently taking: Humira 40mg/every other week, Zoloft 50 mg/day, vitamins and supplements
Have taken: Cyclosporine, Pentasa/Asacol, Aciphex, Imuran, Sulfasalizine, Cipro & Flagyl, Prednisone, various pain med's, Xanax
Surgeries: Appendectomy 2001, Ileocecotomy 2007