Now that I have done a 15 day fast, I won't undertake a longer one again for at least a few months. The pain in my upper back is now a full-blown pinched nerve, i spend my evenings in tears and use lortab to get to sleep. My entire torso is in pain most of the eveningtime, with numbness in my chest and arm area from the pain. The daytime is not too bad at all. I just cant understand how a pinched nerve can take so long to get better. It's very agonizing.