Thank you to all of you for responding to my request for advice,this whole thing is such a learning curve it really does take time and the kind of help/advice that you provide is so valuable.
I have taken note of your comments regarding Codeine,splitting my Pred' dosage,possibility it may not be PMR and so on but just to close I talk to my wife about the advice and comments that I receive from all of you,have done from day one,and she has said for quite some time that maybe I am doing too much and not listening enough.She has her own health problems so naturally I want to protect her by doing housework,shopping etc,anyway it is something to look at.
Today I switched back to Codeine at my 11 am and 5:30 pm stages,by mid afternoon the pain has gone back to the level that I can feel but is not unmanageable.
Thank you to all of you.