hi andy,
i havent been on the boards much either lately cos im going through the same kind of thing, slightly different symptoms but im told there is more chance it is crohn's disease. im having a colonoscopy, barium meal follow through and ultrasound in the next 3 weeks. i've never felt so ill and weak in all my life as i have been doing for the last 6 weeks.
try and be as positive as you can mate and look for some forums where you can absorb info and get support from peeps who know exactly what it is like to be going through the same thing.
good luck mate and keep ya chin up!