What if I want to vomit and can't spit it out?

Vomiting can no longer be spit out, indicating that gastrointestinal tract shows irritation symptoms, but the degree of these irritation symptoms can not reach the degree of vomiting, there are two normal reasons, one is the early changes of acute gastroenteritis, the other is due to the normal reaction of the body after eating irritating food, if accompanied by general weakness, fever, gastrointestinal infection should be considered, should go to the hospital to check blood routine and stool routine, clear cause, should use anti-infective drug treatment.