Why does food make me sick?

I'm the same way. I eat vegan, not very healthily, but vegan nonetheless. I don't eat any animal products and it helps some for me. But also, I have gastroparesis, and its hard to eat some days. Try cutting out most of your gluten for a week, or greasy foods or anything that tends to trigger you. Also, try eating foods that are gentler on your stomach such as rice, crackers, applesauce anything that would be in a bland diet Those are the things my doctor recommended me to try It's a lot of trial and error to find what you can and can't eat I hope you can find a balance of foods that don't make you feel too sick