hi I am a healthy 22 yr old female, and for the past few months, very infrequently (maybe 3 times) I get a sharp pain in my chest, like I'm being stabbed, on my left side right where the underwire from a bra would be about 1- 1/2 inches from the center of my chest. It always happens when I am at rest and not physically exerting myself. there is no history of heart disease in my family, but there is a history of diabetes. This is very troubling.. Any idea's on what this might be or if I should get checked?