I am experiencing a kind of pain around rib area while changing positions. And while coughing in a bent position. I experience this very rarely but it is disturbing. I did got myself checked up by the general Physician and got tests done for hematology, liver function test, echocardiogram, ultrasonography and they were normal. I do also experience phelgm out of cold which are sometimes colourless with black particles. This problem is making me really nervous and concerning my daily life. I stay disturbed most of the time.