pretty constant dull chest pain on a daily basis.

For the Last two years I have been having a pretty constant dull chest pain on a daily basis. I have had 2 stress tests over this time last one was 2 months ago. I have had 2 upper and lower GIs last one was in September. 2 years ago I had an an Echo. I have had several EKGs last one was 2 months ago. All negative. The GI showed gastritis but I am still having chest pains. Sometimes very sharp pains. I have lots of gas as well. After I work out it feels the worst. My head sometimes feels foggy as well. I am 28 and overweight. I have high blood pressure and anxiety which I am on medication for. I am also on medication for GERD. I use Dexilant. Nothing seems to work for me. I know they have several times ruled out a cardio issue but I am still concerned. Could it possibly be all associated with GERD and gastritis.