Do you feel you want to vomit too often? Remember: in case you did not take any poisonous or out-of-date food inside, the source of the problem might be much worse than you expect. An upset stomach is what stimulates this vomiting sensation. A frequent desire to vomit is not healthy, as one or two times is enough to get rid of the possible toxins. At the same time, a stomach is not always a clue.