Pain after right thoracotomy with tracheoplasty

I had surgery on April 11, 2016 and was treated for tracheobroncomalacia. The surgery improved my breathing significantly and eliminated the chronic cough I experienced along with shortness of breath. I had pain in my right shoulder. I received Celebrex and lidocaine patches which cleared up the pain about 60 days after surgery. I am no approaching my 120 day mark after surgery and am experiencing pain in my right shoulder and arm again. I tried heat and Tylenol with only very temporary relief. The Celebrex is helping. Is this normal? How long will I have this pain.