Best to contact your surgeon to have the painful protruding screw removed.See if you can obtain your hospital records, because if you see a new surgeon it is helpful to know the type of screw and plating system that was used.
I'm sorry to hear about the problem you are having. Yes, you should definitely contact your surgeon. That metal plate and screw(s) can be removed at this point, and that might help your symptoms. It should be a relatively simple procedure, but may require anesthesia. You can expect some bruising/swelling as well. Best wishes.