FOOD POISONING SYMPTOMS http://www.thewizardoffood.com/teafacts.html... Symptoms of food poisoning will vary depending on the level of the germ or viruses ingested. Symptoms usually include chills, stomachache, nausea, muscle aches, and diarrhea. If diarrhea occurs shortly after a meal it is usually a sign of food poisoning. If you experience any abnormal symptom or even feel that you have eaten a contaminated food, contact your doctor immediately.