You're In school, FR, right? Then go to the health clinic there -- your fees and tuition if you're full-time will have that covered.
I don't have a clue what kind of plan your school has, but at my grad school we were on an Aetna Plan with the faculty, staff, etc and the clinic could, and did, send us for testing and consultations. There were no co-pays when I sw specialist and had tests.
If it is the heart then testing could at least tell them the problem, perhaps. Just go check into it -- what can that hurt>
Nichole