So, for the last handful of years (I'm 24), I've had a recurring problem (usually only a couple of times a year) where I get these awful, rotten egg burps and every time I get them, I know that I'm going to be in terrible shape for at LEAST the rest of the day. Sometimes it lasts me up to two days. Vomiting, diarrhea, the whole nine yards. However, sometimes, I CANNOT throw up, although I know that I need to.