Flux, when I was first diagnosed with possible IBS, I ran home to look it up on the internet, and read everything available. I only found maybe one or two mentions of nausea.I dont just get nauseated, though. I wretch for about 12 hours straight, along with the diarrhea. My new GI doctor has a theory that my colon starts spasming so badly, it backs everything up, right up to my stomach. And then the things in my stomach have nowhere to go, so I throw it up ( and quite violently,too). So far, nothing has stopped the vomiting, once I start to get sick.What do you think about my diagnoses of IBS? The doc says that for now, since all my tests have come up normal, we'll just have to go with the diagnoses. If the Bentyl and Levsin dont prevent me from getting sick, he'll do some more tests.So, flux, and everybody else, what else could it be?p.s. Young and restless, have you tried taking something like an antacid? Sometimes, for my in-between-episode nausea, something like prevacid or nexium will help.