Im 17 and for the last hour or so have been experiencing a very sharp pain in my left breast. I don't know how else to describe it other than it has a similar sensation to heart burn except it is very clearly my breast tissue. It is extremely uncomfortable but I do not want to have to go to the hospital if it's not something to stress about. Help please! Any thoughts on what it is or how to "cure it" or just take away the uncomfortable feeling/ pain?