first meal of the day....

so i wake up kinda late in the afternoon lol so i don't eat breakfast so i go right into lunch.... Everytime i eat lunch i have to take a shit and my stomache hurts alll the time.. never fails...! i feel like i eat and it goes right through me ....but then when i eat dinner and snacks... i don't take a shit... just pee.... Why is that? my stomache right now is rumbling and hurting like if i have to do #2 or #3....😰😰😰😰😰