I have been struggling with this issue since July and as you all know has been a huge killer in terms of quality of life. I start each day feeling great but by lunch time I get a gurgling stomach in my mid section, followed by a feeling of slight inflammation/pain around my abdomen and then a general feeling of lethargy as the day moves on. I do have excessive gas after some meals, but my bowl movements have been completely normal during this entire episode. Gastro performed a colonoscopy and stomach endoscope in September and concluded I have IBS. He suggested I take the Promethus IBS blood test and will have those results later this week. My question is how can my Doctor claim I have IBS without diarrhea or constipation? There is something going on down there, but these seem like the two most common Rome III symptoms of IBS. I really think it is a small intestine bacterial overgrowth, but it seems that would trigger diarrhea or constipation as well.