Food Safety Report: McDonald's, Prairie Avenue, Beloit, WI, USA 2 years ago • details 2 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Headache Suspected source: I ate here today Onset: Less than 4 hours Duration: 4 to 12 hours Sick: Me Additional information: I ate the food and then I felt sick