This is exactly what happened to me. My surgery was 6 weeks ago today and my new pain had increased in the past 3 weeks. I am going back to my Dr. on Friday. I also weaned myself off percocet but am going to ask for more when I see the Dr. I have been doing to PT for 4 weeks now and had a progress evaluation today. I told the therapist that I feel worse now than when I started PT. He said that sometimes after surgery, people develop nerve hypersensitivity and it can take months before they calm down. Keep me posted on your son's progress. We are having a similar experience.