Just read through your thread again, Branluc. I'm thinking you will find out that you are simply under-medicated, and/or doing too much. You mentioned filling your rx for the narcotic, but what is your actual pain protocol? What are you taking, how much, and how often. This early out, it should be round the clock (every 4-6 hours, in a strong enough dose to be effective). If your instructions say 1-2, every 4 to 6 hours, are you opting for 2 every 4 hours till the pain is under control? If you are doing this, and STILL having that sharp awful pain, then I would worry too. But if not.....maybe that is all that is needed. I hope so! Good luck...we're all rooting for you.
Sharon