text: i keep having this deep pain in my chest-where my mitral valve maybe located.? if feels really deep and i feel sick when i experience it. i have had different test done but the doctors are not helping any. i am 100 lbs over and i do have a history of anxiety. as long as the doctors have checked it out, its does sound as if you may need to start by addressing the weight and the stress, get those sorted and if its still there make them check you out again