Would it help to keep a diary of your pain Berrie so that you have something tangible that you can present to the consultant?
I know from experience that it really can take your body a while to recover from any sort of surgery, let alone something so intrinsic to your mobility as your back.
How often are you getting physio? I had a years worth of at least weekly physio after I had a cartilage op on my knee. Heat treatment to break down scar tissue as well as physical physio.
Sorry you are suffering
Lyra, who is looking after the boys while you are at the party? Are they staying with relatives? Could said relatives not be pressed into rugby service?