Food Safety Report: Subway, Edmonton Trail, Calgary, AB, Canada 2 years ago • details 269 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Headache Suspected source: I just had subway rice bowl and I am extremely stomach pain diarrhea and cramps Onset: Less than 4 hours Duration: 12 to 24 hours