What Medical Tests Should Be Done For Discomfort Around The Ribcage On The Right Side?

age 51 male all organs still, noticed slight discomfort in upper stomach area on edge of ribcage right side 3-5 inches from sternum over, off and on something doesnt feel right comes and goes for lat 2 weeks. age 51 male all organs still, noticed slight discomfort in upper stomach area on edge of ribcage right side 3-5 inches from sternum over, off and on something doesnt feel right comes and goes for lat 2 weeks. Had blood work, urine, all checked out, and xray showed nothing at a walk in clinic. What should my next test be? nothing noted makes it worse or better. Had blood work, urine, all checked out, and xray showed nothing at a walk in clinic. What should my next test be? nothing noted makes it worse or better.