Stomach Bug May 2025 Symptoms. The main symptom of gastroenteritis is diarrhea, which may be accompanied by nausea and vomiting. The symptoms of a stomach bug can include:

 — “symptoms that should prompt you to go see a doctor, especially if it’s been more than several days are blood in your stool, severe stomach pains, or signs of.  — symptoms of norovirus can vary from person to person, but they generally include lots of gastrointestinal discomforts and inflammation of the stomach and.