I have a very frustrating and sometimes painful issue that crops up on rides over 4 hours long. my stomach sometimes gets bloated and I get what I first thought was a stich in my side, but I now think it's gas pains as I have to stop riding completely for it to go away. A stich I can sometimes strech out.

I'm extreamly cautious now with drinking and eating on these long rides.

Has anyone experienced this problem....
Any ideas how to prevent it....