I Have Been Going To The Chiropractor Since March When

I have been going to the chiropractor since march when I was waking up 2 or 3 times a night with my arm throbbing and tingling. it improved for a while when in may , I returned from vacation and returned to the chiropractor and then started to go downhill again, am still not getting total relief. It seems there was a pinched nerve or maybe tendonitis. I have tried anti-inflammatory(ibuprofen), massage, electrotherapy, different pillow, different chiropractors and still the pain persists. it has improved dramatically but still persist. xray showed nothing broken or extraordinary. please help