yup, that's happened to me too. I RARELY ever give in though. But one time I just felt sooo sick, I had a really bad sinus infection and after a cold shower that didn't seem to help (which usually does) I sat at the toilet and though "well this is it, there's no going back now" and i felt it coming up - but it didn't happen! lmfao it was soo weird. I think part of the reason might be cuz i was swallowing really hard the whole time... haha...