has anyone else had the experience of being on norspan patches and they stop working.I am in absolute fibro agaony,the patches,5mg a week,have slowly stopped woring in the last four weeks and i dont know what to do.I have rung the pain clinic trying to get help,but they dont ring back,so desperate tonight i put on another as they come in 10mgs but am scared now,anyone have any advice,thanks Julia in oz