Every day no matter what i eat, i get severe gas abd pain 30 min after eating.doubled up for 30 min, then abd pain resolves. what might cause this?

Post eating: Are you sure that you're not having symptoms after eating diary products(lactose intolerance)? If not, you may have a type of irritable bowel syndrome. A loose bowel movement usually follows the cramping in IBS. A hyperactive gastrocolic reflex is another possibility. Taking an antispasmodic like dicyclomine 1/2 hour before the meals prevents the cramping. See gastroenterologist as needed