I have a small ball or lump above my belly button. And I get it after eating usually or sometimes just out of nowhere. It gives me such a horrible pain that I can t even move. Other times it just shows up and I don t realize until I feel my stomach. I push on it and it goes away but makes a sound as if air was bieng released out of a balloon that had a small amount of water, at times when I do this my stomach hurts really bad and I feel as if I want to throw up! What exactly could this be? Is it something,to worry about?