Dutifully drank the stuff they sent me last night and turned up at Pontefract for my ct scan appointment and then sat and drank more of the stuff for an hour before my scan. This time was told to 'pay a visit' after half an hour but then to hold in for the next half hour before scan. Never really think about needing to pee but sure enough once I got into the half hour when I wasn't allowed to go I was suddenly…