I'm inclined to think Spinal Soldier is right on target with this thing. I have serious back/spine problems and fibro too, but it sounds like the fibro diagnosis is just too simple for what you have given us from the MRI.
I use Ultracet (Tramadol/Tylonol) for the fibro and Xanax XR 3mg to help too. I'm allergic to SSRI's/SNRI's and muscle relaxers in general. I also use Dilaudid and Oxycodone for the back pain left from the failed fusion.
Not knowing your health care system, it's difficult to recommend what you should do, but my best recommendation would be to get a second opinion on everything. That was how I found out that my fusion had failed....because the radiologist refused to acknowledge that I don't have a disc at L5-S1 and kept saying that I had anoher bulging disc. Instead, the Ortho/Spine Specialist was able to see on the CT that there is bone growth from the fusion, but it goes in the wrong direction!! It looks like there is a bulge, but it's actually bone! There is so much open space on both sides of the funky bone growth that it causes intense pain and I have to be really cautions about what I do.
I hope you find some relief!!!
Failed fusion L5-S1, Pituatary damage, HGH Def, Fibro, Bladder surgery failure, Nissen Failure, GERD, OCPD, GAD, MDD, CTS (Bilateral Surgery completed), CFS, TMJ, Migraines, Vit D, A, Magnesium deficiency, Pre-glaucomic (sp?), HBP, Idiopatic Reactive Hypoglycemia, Edema, too many Drug/Food allergies, sensitivites, and current meds to list.