Do I have anxiety or just stomach problems

I am an avid leg bouncer but I didn't think much of it until one day I got food poisoning from a restaurant, and ever since everytime I go out to eat my stomach immediately flares up and it feels like I have to run to the bathroom immediately (for relief out of both ends), though I normally never do. My stomach will also freak out when I'm in a situation where I can't immediately fix it, like in the car or while watching a movie. This leads me to believe it may be anxiety making me think I'm gonna shit myself the second I eat and don't have access to the bathroom OR I just have something wrong with my stomach but I have no idea.