I would definitely seek a pain management specialist and get a reevaluation of your spine and joints. I can tell you that celebrex made my pain worse, as does GABA drugs like lyrica and neurontin. This is because some drugs are anticholinergenic like celebrex and many antiinflammatories, and the GABA drugs block GABA. Apparenty, my pain problems respond better to drugs that are not anticholinergenic and that allow me to have more GABA. So having a pain management doctor that understand how the drugs work and can make good calls is important. Also, when you get those blocks, you need to be careful, as you know, about infection. Do you have a fever? If so, you need to see a doctor. Also, if you have a curved or crooked or caving in spine with degeneration, taking muscle relaxers all the time can cause it to get worse since you don't have any support for your spine when the muscles are relaxed. When I take them rarely, I have to stay in bed, one false move and I can be really really hurt.
I using Lidocaine patches right now, which are working well, though you can only use them 12 hours at a time. Maybe your primary care doc could help you out. Other medicines that you wouldn't expect can cause back pain and other pain as a side effect, and that is easy enough for you to check out. You can even ask your pharmacist. Also, all my MRIs came back normal until I had a myelogram and if you haven't had one, I would suggest you try to get one. MRIs can be misread and the myelogram is the gold standard for spinal nerve compression. And if you have a problem like that, it might be good to see a good pain management doc or even orthopedic person to get you diagnosed and refered to a neurosurgeon if something like that is needed.
I have been to neurologists and, besides horribly painful tests that show little, I havent gotten any help, dx, or relief. This is my experience, but they are more involved with brain problems, epilepsy and the demyelinating diseases. I have very bad degenerative osteoarthritis and spodylitis, and stenosis. My pain management doctor ordered all the tests, physical therapy, meds, myelogram on my request--which was a good thing, and referred me to a good neurosurgeon. There is new microsurgery with lasers for the back now and lots of new things. Pain management helps.
--Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us. Bill Watterson (1958-) cartoonist "Calvin and Hobbes"
Ills--Sjogrens-Lupus-like AI Disease, Hashis, Vitiligo, spinal stenosis/fusion with plate, salivary/lymphectomies, Diabetes, NAFLD, COPD, RLS, neuropathy, trigonitis, hystero, diffuse brain atrophy, GI nightmare
Meds--Plaquenil, Evoxac, Metformin, Synthroid, HCTZ, Estradiol patch, Prosed, Detrol, Klonopin, Ultram, Vicodin, Restasis, Albuterol, steroid injections and pred prn