Food Safety Report: Subway, Mississippi 15, Pontotoc, MS, USA 2 years ago • details 2 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Chills, Headache Suspected source: Philly steak and cheese sub Onset: 12 to 24 hours Duration: 12 to 24 hours Additional information: Husband also got sick