Hello in school time when I run or walk in summer I feel pain in stomach and I feel not relax until I not emptying the bowl ,so doctor stomach heat problem, so this problem solved after taking medicine and nowadays I feel constipation and feel gastric if my bowl is not empty and feel gastric and after eat something than I feel so gastric burning and pain and feel relax after emptying the bowl, so this is ibs or gastric or indigestion ,i feel hungry on time, don't have any bad habit of drinking and smoking.