What is the source of the pain? Joint, muscles, entrapped nerve?
If it's a nerve you are basically screwed. Not much that can be done without surgery. That is the situation my wife is dealing with now, plus a few other problems from a childhood accident. She lives with her tens, pills, and salves.
Muscle or joint? There is this stuff called Elephant Balm that helps her. Not sure what brand, there are a few and she can tell the difference. Glucosamine & Chondroitin complex is good also. You can never go wrong with Co Q10. Shark cartilage too. She used DMSO with some success years ago before things got really bad. By itself is good. It is also great for using with counter irritants like capsacin (Ben-Gay etc). The DMSO just transports any med right through the skin. When I say an I mean it. Cigarette smokers beware of your nicotine encrusted fingers. Also any topical patches be carefull to stay away from. Beware, the BIG downside of DMSO is you smell like you live on garlic.
Have you had a blood workup for Vit D? It's a bit of a fad thing for docs now. But, I've seen one woman I know whose pain was so bad she was literally on the verge of suicide after like 8 years of it and the doctor run-around. A blood work-up showed like almost zero Vit D. A month later she was a new woman. I would never have believed it if I didn't see it happen. My wife's was also very very low. She got some improvement from taking D. I don't know how religious she has been taking it, besides not nearly as much as she should be since I do the ordering. My sister's D level was also much like my wife's, almost non-existent. Her pain got better but not a major improvement either. I am reasonable sure she is taking the dose she was told to.
You may also have a food allergy if it is systemic pain, ie all your joints hurt and it isn't RA.
Do your research. There is plenty of info on the net plus a few books. Also plenty of snake oil salesmen.