I get Bloated after every meal even after changing my diet and eating less!!!! I have had endoscopy, colonoscopy, upper gi series with nothing found. Doc thinks it might be gastroparesis. But he made me do a hydrogen breath test which just came back positive for Small Intestine Bacterial Overgrowth. He put me on meds(rifaximin) for that(i'm on day 5 of 10) and I still get the same symptoms. I eat only half a meal now and get bloated an hour or two after. The bloatedness gets so bad it feels like I am going to explode. It's also hard to breath (shortness of breath) when this happens and my diaphragm gets really tight! Help!!! If the Rifaximin doesn't help - my doc wants to put me on Zelnorm next and see if that helps(supposed to help ibs disorders and slow gastric emptying. Does it sound like he knows what he's doing. Please give me any advise!!!!!!!!!