If your digestion is not moving along like it should, you'll get your symptoms, so that means you may be constipated, which the three ways to prevent that is: Drink enough water daily, eat enough fiber daily, and exercise regularly. Some medications, too, can cause this, so review side effects and adjust accordingly.
If your digestion is moving well, then you probably have a virus, kind of like a flu, and that will burn itself out in time, there are no antibiotics for such things. If you have, say, a bacterial infection in your gut, a regular family doc can take some stool samples and tell if you need medicine to get rid of it.
But if all in the world that is going on is lots of gas, one way to at least ease that symptom is to drink an ordinary Original Alka Seltzer. But to have throwing up with it suggests one of the first two paragraphs I've put as your problem.
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