How can you tell? My husband has been ill since very early morning with v and d. He didn't feel well when we got home after he had some fast food on our drive back home last night from the holiday. I would say he started feeling bad about 3 hours after if that but didn't get sick for a good 6 hours after eating. Is there a way to tell? Gosh if it was food poisoning I would feel so much better and not just be fearing the worst every second today. What a mess