Do NOT allow a PT push you to what you feel is too far. Trust your body and what it is telling you. Yes PT is going to hurt to a degree. But creating massive pain is actually NOT a good idea in PT. You do want to keep moving as much as possible.

As far as the neurontin. Many find it helps a lot with the burning, but you may need a higher dose. I'm NOT a dr. but for me I had to take a great deal more. So its ok to go back and say that its not working, and see if they can give you more, you are on a very small dose (3600 is the top dosage) if you are tolerating it.

Many find that meds like Percocet don't do anything, but it is still common to try them in case they do help. You still have, as others mentioned, many other options to try as far as medications. In addition there are different procedures they can try, if you are open to them. Your dr. may offer them, things like a sympathetic nerve block. Go to RSDSA to learn more about the disease and different treatments, etc.