I am 26, for about 4 years my upper left chest (heart I suppose) feels heavy all the time, like I need to take a deep breath. Every month or so I get a sharp pain, once I take a deep breath, the pain intensifies and then subsides. In addition, the constant pain in my chest feels about the same as where I assume the carotid artery is in my left arm (inside upper arm- almost near the arm pit). I thought it was hi cholestorol, but apparently that has no symptoms. Thanks for for any tips!