My upper abdomen is very distended and it tender to the touch,also eating/drink makes me very nauseous at times,even something a simple has water gives me the urge to vomit or causes pain in my stomach.. also the pain can feel like a stabbing or burning sensation like my stomach is being sliced open. I was told years ago i had a hital hernia but it was nothing i should worry about, what could be causing this? (i should mention i do have ulcerative colitis,gerd,and ibs)