Hi fly. All I can say is from my experience; I just had the dry heaves. I may end up with the wrap coming undone - who knows? Some people have been able to vomit after their fundo, but I'm not one of them. So I just had to suffer with dry heaves and hope that it would eventually stop.
Next time, I'll go to ER, and get something to basically knock me out. I knew my problem wasn't food poisoning though (just 1 too many alcoholic drinks one night), so knew the problem would pass within a few hours too.
I think not being able to vomit has been the biggest downfall of this procedure, but on the positive side, I no longer have reflux, and no longer take PPIs.