I'm having a bad flare up at the moment, and went to a NHS IBS wellbeing day today. The gastro Dr mentioned the diagnostic criteria and emphasised the relief from pain after a BM symptom as important. When I have a bad flare up, I have to go several times in a couple of hours or so, but each time doesn't help much - still leaves me feeling rubbish and in pain. Having had this for years, I trust my GP but being an anxious wreck at times, it's made me worry!!