My brother had old besan of 3-4 days a week back. Uske next day he had a bad stomach ache. Phir sit has been a week eating that besan bt uska week mai 4 baar stomach ache ho chuka hai. Sometimes the stomach ache that zada. Baki time its a light stomach ache. Tomorrow around 1-2: 30 he had a bad stomach ache. He goes to the gym and also take good nutritious food of paneer roti rice and everything bas bahar ka khana thodha kam kar diya hai bt he has not stopped eating bahar ka khana ek dum se. N a week before he had been eating corns for 3 days consecutively but he ate that a week back. Why is he having so much so stomach ache. Its not tht ki he hav the stomach ache regularly but for 3-4 days it was continuous n then kl usse raat ko stomach ache huA. Why is that happening with him?