im a 19 yrs old. as far as i can remember i started having chest pains when i was about 6 or 7.,when i was thirteen i finally had a check up the doctor said something bout my heart valve which doesn't completely close.,from what i read bout those kind of defect it said it isn't really lethal in some cases.,i don t experience it regularly..it just comes anytime i can t predict..another thing is I am sensitive to drinking coffee, everytime i drink coffee il start to have difficulty in breathing, il palpitate badly or have chest pains.,is this something serious ?