Not sure if I have the flu or food poisoning. a couple days ago, I found some old strawberry jam in our cabinet, dated 2009. I opened it, tried it. It seemed to taste OK. So, I prepared a peanut butter an jam sandwich and had it for lunch. Not too long after eating it, my stomach started to ache. just did not feel well. That was Friday. Was up all evening on Friday with the runs and through up Saturday morning. Not sure if food poisoning or flu. feel better now, but still have the stomach rumbling. your thoughts?