STOMACH HURTS IN SCHOOL?

in the morning i eat breakfast normally. but then in school, my stomach hurts like everyday, so if i have a chance to be alone in the restroom i take a dump to feel better. after that i thought that i felt better but starts to hurt again, so i take another dump durning recess so other people wont know. this happens to me like everyday. whats wrong with me? is it the breakfast? what should i do?