im 19 y/o female. don't drink or smoke i have a history of chest pains but doctors have no clue what it is. ive had almost every test done & nothing has showed up. the feeling is different lately though. its a severe pain on my left side under my breast where i cant take normal or deep breaths or the pain gets sharper. it doesn't go away until what feels like a bubble pops i need help on how to prevent or at least make these last a shorter period of time.