Odds are, it's either indigestion (Yes, it DOES feel like your heart is about to explode), or anxiety. It could also by a byproduct of smoking, as it raises your blood pressure and heart rate.

Regardless, I'd get it checked out. Chances are, it's not serious, but you never know.
Purple Banana Reviewed by Purple Banana on . Painful sensation. This isnt all of the time, it happens whereever, randomly. Its never actually happend to me before besides just recently. Right under my Left breast area, if I take deep breaths I get like a constricting sharp pain sensation. Its hard to describe... So uhm shuld I see a doctor? lol. Rating: 5