I myself have had the surgery but it has been 21 years. Every now and then I do get an ache or pain but not like you describe. Had you all along exercised. What about your weight or possibly your mattress? I sleep fairly well. I'm speaking for myself and twin sister who both had the surgery. Sorry to here about this. Have you had x-rays done to see if there is a problem from your surgery. Sorry I could be of much help.