It's funny you brought this up. Just a few days ago I had anxious feelings about vomiting. It was brought on by what I had just eaten (possibly undercooked eggs). I was very scared of the prospect of vomiting.
Fortunately, I did not vomit. Later that day I started thinking about this fear and how irrational it was. I don't know anyone who has died of vomiting. In fact, for a whole year, my brother vomited every morning (oddly enough, the doctors' still can't figure out why), and he got through it just fine.
Can you go into more detail about your fear of vomiting? What is it about vomiting that scares you?