Im a long distance lorry driver and i only get out of the thing if im on a break, i drover from manchester to Aylesford and back the Mon-Tue which was over 12 hours driving... The only thing i find that helps is to keep moving, adjusting youre postion.....i too pid to see a doc and it worked for a bit as i was weight training at the time, now i just kinda put up with it....