Oh yes, I think this is really common. I never threw up with any of my pregnancies, just kept feeling like I was about to! And my sister had really terrible nausea until 20+ weeks, but never once vomited, which (although obviously it's better not to vomit) is frustrating in its way because no one takes you seriously even though you feel like absolute sh*t.
I think there are things you can take that are anti nausea, basically the same things they give to women who are actually being sick, but this would be only if they considered you really needed it, I guess. Otherwise it's pretty much a case of finding what works for you in terms of avoiding certain foods/smells, eating or not eating at certain times of the day, and finding something to have or chew or suck that helps you a bit. Personally I brushed my teeth a lot when I was going through this phase! Hope you get some relief soon.