I had OHS 4 weeks ago to repair my mitral valve. I am recently having a real problem that is never usually a problem for me...I am laughing. The laughter causes me such extreme pain that I am brought to tears. I am having real trouble not laughing at things does anyone have any advice as to stopping this problem. Right now I am fighting the urge to laugh by punching my self in the leg and the bruises are adding up LOL.