I also have RA and my rheumy only prescribes meds as well. I noticed you have Reglan in your list of meds, do you have GP?? Sorry to hear you are in pain, I have taken so many different meds and there are so many different combinations, it just depends on the person and finding the right mix. I've had it going on four years and right now I'm only on MTX and pain medication and it's pretty painful. Just go back to your doctor and be persistent, and tell him it isn't working, rate your pain on a scale of 1-10, that is what I usually do to get some results.
Hang in there!