What is the unpleasant sensation from stomach with a tendency to vomit?

The unpleasant sensation from stomach with a tendency to vomit is called nausea. Nausea is a feeling of uneasiness and discomfort in the upper abdomen that often precedes vomiting. It is a common symptom of many medical conditions, including gastroenteritis, motion sickness, pregnancy, and certain medications. Nausea can also be caused by anxiety, stress, or emotional distress.