Hi!
This is pretty strange to me as this is the first post I've ever found that describes my problems in detail. You guys seem to have the exact same thing that I have.
I have a fear of vomiting myself, I'm on 2 pills a day to control my reflux and I feel nausea all the time after I've eaten a "large" meal. I also have a fear of going out because I think I'm going to feel sick. But I almost never vomit. Been at least 5 years ago now.
I've already figured out that a part of the problem is most probably stress related. When I'm in a situation that I start feeling a bit sick and I'm not in a private place (home/car/toilet/outside/whatever), it tends to get worse because of, I gather, my fear of vomiting and more specifically, my intense fear of vomiting in public.
It's not that I'm a social outcast who sits home all day afraid to go to work or go out. I refuse to let it fully control my life so I place myself in social situations which could cause a problem, just to force me to deal with it. But when I have a meeting or when I'm going to friends or wherever, I just don't eat before I leave. When I'm going to go to a restaurant (which I really don't like to do because of my "condition"), I eat there but I make sure that I don't eat a lot. And I take an antacid right after the meal.
I can't eat during a long period either. So I can't do the appetizer, main course, dessert either because when I eat something and wait a short while, I tend to lose my appetite or start to feel a bit bloated/nausea. Which is a problem when you're at social events. I always have to refuse food/drinks which causes some strange looks and reactions.
I can't drink that much either. Alcohol that is. When I was 18, I used to be able to drink beer like the next guy. Now I'm 29 and when I've had three beers in a full evening, I have to really watch out or I'm very very nauseaous.
And I firmly believe that it's not all in my head (stress related) either. I'm pretty sure it's a problem with my stomach or whatever but the effect is aggravated because of my fear of vomiting. My doctor couldn't help me so I went to a gastro specialist in the hospital. He gave me some medicine, which I have to take daily, that did wonders for my reflux (I used to have reflux _all_ the time, even after drinking water in the morning). I can't take sour stuff either, which I used to love (juice, lemons, oranges, ...)
Next to those pills, the only thing that really helps me is an antacid. I take one or two after every heavy meal and they really get the nausea down. So I kinda get the feeling that it's still an acid problem. Even though they looked in my stomach and didn't see much wrong except for a bit of an inflamation and my stomach that didn't really close all the way. But no extraordinary amounts of acid. I also did a stomach emptying test. Sounds gross but it's not what you think

, it's a test wher you have to eat something on a sober stomach and they measure how fast it digests. And they said I have a really really slow digestion. Which would explain why my food seems to lay like a brick in my stomach and makes me feel nausea.
When I feel the nausea, I also have these "burping sounds" in my chest but they are not burps. They're kinda annoying and people sometimes look at me like what's his problem? But I can't stop it. But this is something I only have, I've had it since I was 12 or something, don't know anyone who has that.
And to top it off, I can't belch. Well I can, ever since I'm on the reflux meds I belch several times a day. But I can't induce it. And the belching helps enormously to aleviate the nausea! Sometimes I'm praying for a belch to come and I know it's just around the corner but I can't do it myself. It has to happen on it's own. I wish I could learn how to belch on command. I'm sure that would make the nausea so much more bearable.
Wow what a long post. I've learned to live with my nausea. But I would give anything to find a cure for it. Because although I say I'm not letting it control me, I know it actually is. It's crippling. I just want to live a normal life like anyone else. Sounds stupid but I would just love to go out and party like I used to do without knowing I'll be escaping to the bathroom or outside and feel sick.