hi im 42 i have had abad problem for the last3 moths first it was on my left side, it stated feeling like abolloon in my uper right ribs and then feeling like ashape knife, now its also on my left side uper rib cage, and last 3 to 4 min afew times aweek, tonight on left side, no ballon feeling just stabing feeling last 4 min, half an hour ago, uper left rib cage