Under My Ribs It Feels Like There Is A Fist

under my ribs it feels like there is a fist the doctors gave me an ultra sound my gallbladder and pancreas they said look good now they want to scope down my throught i told them i use to have ulcers but now i take prilacet once a day and have no problem one day at work it felt like something popped out from under my ribs and popped back in 2-19-2015 they put the camera into my stomach and did a colonoscopy and that was fine that's when i said forget it now a year later it is much worse could it be a hiatal hernia is that why they want to scope again