I think you need to see a neurologist. I have seen 2 and though they did not do much for me they did rule out a lot of conditions. I think that it is important to make sure there is not another condition that could be causing this. I will say though my 1st emg was done by a physciatrist and I was not dx with PN. Then I went to a neurologist and had more extensive testing NC again,mri,etc and I was dx with PN. I don't know the reason behind why I have PN even through all my extensive testing. So for me now it is about pain control and why I have seen pain doctor/anestesolgist who I feel work more with meds and treatment then a neuro or gp.
In the mean time can you have blood work done? That is a simple test that could possibly show something such as low b12 or diabetic etc.
Hang in there