vomit often, after eating oil, or mayo?

No that's not normal that means you have a clogged gallbladder and a sluggish pancreas. Get yourself chanca piedra. And put yourself on a no-sugar no flour diet per month while you're taking the chanca piedra it'll clean your gallbladder out and at the same time you should be taking pancreatic enzymes that you get at the local drugstore it'll get your insides moving again

No, it isn't............