First thing I can think of, which a couple have already mentioned, is that you have acid reflux.
If your throwing up is combined with severe heart burn, indigestion, and/or an upset stomach, that very well could be the culprit.
Another thing that comes to mind is that you may just have a very sensitive gag reflux. My boyfriend has one...it's pretty bad...to the point that any pill or hard textured object he tries to swallow can never completely go down and he throws up just as you do a lot of times.
You can be prescribed to certain medications to ease up the problem for either problems, so ask your doctor what he/she thinks what might help you out.
Acid Reflux. A doctor can prescribe Zantac or I think maybe you can get something over the counter now for it.Why does foam come out of your mouth when you die?
ask a docter about ithow do you get the taste of cum out of your mouth?
Sounds like you have tummy problems...maybe a reflux problem? I'd see a doctor if it persists because that can't be fun! Maybe you have too much acid in your diet, or too much stress. At any rate, see a professional.How to treat a cut inside a human mouth?