I think we can all agree that this thread is wonderful and comforting, so thank you, Libran, for starting it. I also am afraid of vomiting, and while I no longer seek out trash cans everywhere (juuust in case

), it remains one of my "worst case scenarios." So, like you and others here, the thought of pregnancy and its accompanying discomforts is terrifying! Morning sickness? Yikes! And afterward having a baby that WILL spit up and vomit periodically for years? Oh no!
However, the thing I keep reminding myself every time the worry over "what might happen" begins to take over and make me think that I should just bypass the whole situation is that fear should never keep me from doing something I want to do. Ever. It's been said before on this forum: we'll get through. The "worst case" may occur, but it won't last forever, and the ultimate payoff is worth the price. And there are things to help with the nausea, as mentioned. =) Plus, if you're like me, you can make a pact with your partner regarding diaper duty vs. vomit duty. Husbands/boyfriends are useful that way.
As for fear of doctors, needles, etc... unless you have something physically (or legally) barring you from it, have you considered a home birth with a midwife (advanced nurse practitioner)? That at least would let you stay out of the hospital.
Just my two cents. =)