I have been dealing with gas and loose stools for the past 15 yrs of my life. I am 57 yrs old now. I have had colonoscopies and they have turned out fine. But something is not right. When I am sitting on the toliet, my stomach feels like it is growing and I could pop it with a pin to get the gas out. My stools our loose when this stuff occurs, sometime I vomit. I do not know where to turn to..Have tried all of the over the counter stuff and suppositories subscriped by my doc. Help!