Suggest Treatment For Severe Leg Pain

Hi I am 40 years old and in fairly decent health. I was diagnosed with Mono Neuritis Multiplex in 2005. I suffered severe pain from the nerves in my legs starting to regenerate from what I was told at Duke Medical Center. I still have no feeling in my left leg. My current , more immediate symptoms lie in a mental capacity from back to back deaths of my mother, father, and grandmother who was more of a mother than my own. I guess what I am asking is I have been on Fetzima 120 mg for a year, seen NO help and been prescribed valium, now klonopin .5 and .5 valium 2 times daily and I still see hardly any relief in my grief, mental health. I regularly see a therapist for talk therapy. I am wondering if I need to be on a higher dose of antianxiety medicine or even trying Xanax.