I really can't explain the noises my stomach makes for no apparent reason. it sounds like my stomach is farting internally or sometimes it makes the noise that water makes as it runs down a drain pipe. another classic is when it sounds like you just let go of a balloon before placing a knot in it!!...it can be really embarassing...i have no allergies so i'm thinking it may be trapped air. can trapped air cause stomach noises like this and is this normal???