Usually, when someone reports having a stomach flu, they are usually reporting that they are suffering from nausea, vomiting, or diarrhea. Although these are common flu symptoms, for the most part, major flu symptoms are respiratory and are accompanied by fever, coughing, chills, and other flu symptoms, and not usually directly related to the “stomach flu” When people claim to be suffering from the stomach flu or may say that there flu symptoms are nausea, vomiting, and diarrhea, they may be referring to a stomach virus, unless these symptoms are combined with flu symptoms. Its always important either way to seek medical advice from a doctor or a medical professional, so if symptoms of these nature occur, visiting with a health professional is always a great idea in properly diagnosing flu symptoms and prescribing proper treatment.