Hello, I have for last couple weeks sharp pain/jabbing around and under my left breast , this pain is short and last 3-10 seconds ,and in evenings. when i drink coffee i have that jabbing too...no other signs but it worries me a bit...i am 32 years old,never heart problem,just once about 2 years ago when i was drinking a lot of coffee in gym and after felt sick with dificulty breathing for 10 minutes.