What does it mean when i have to go to the bathroom to have a vowel movement after everytime you eat (30min. or less) like the food isn't being digest?

Gastrocolic reflex: It doesn't necessarily mean that food is not being digested as it should as it would be way too fast for it to travel through all of your gastrointestinal tract in just 30 minutes. Some folks have more exaggerated, so called, gastrocolic reflex manifested in increased movement of the large bowels in response to food reaching the stomach and being digested there. It's not the only explanation, tho.