Disturbing thoughts about food?

I love to eat a lot, but for the past few days, I've been having really creepy thoughts about what I'm eating and it has made me nauseous and unable to eat! For example I was eating pasta yesterday, and a thought violated my head that the pasta sauce could have vomit in it, or that someone might have regurgitated this pasta and served it to me(probably TMI, sorry). Either way, the only things that aren't grossing me out currently are drinks with carbonation and sushi... I'm I just letting my imagination get the best of me, or do I need help?