I have chest pain, shoots thru shoulder, feels like my lower ribs keep pop out of place, ekg wasgood

i have been to several hospitals, i'm waiting to see the pulminary doctor. but other hospitals dont know whats wrong. say my ekg is fine, my dedimer was low but they did an mri to make sure there were no blood clots, which there weren't.  last week was rough, i would get dizzier by the hour and it continued for days on end.  i'd knod out in mid conversation with someone, and always felt drunk, like my whole equilebrium was off.

I am in school for massage therapy and the other day my heart beat out of no where starting racing,  i was already getting real hot bursts that would come and go and feeling dizzy but it got worse, I thought for a second my heart was going to burst.  I went to which turned out to be the crummiest hospital imaginable in the northern ky, southern ohio area and they couldn't figure it out.

the weird thing is when this all first started i only thought i might of popped my ribs out of place (like my floating left ribs)  it always pops or makes this sound and before all this stuff started happening it was hard to breathe without pop and unimaginable pain.. then proceeds 2 asthma attacks in not even 12 hrs and the rest of that throughout the week.

I'm only 26 and i'm really concerned.  I try to eat pretty healthy, always had perfect blood pressure.. please help with some insightfull feedback.

 Thank You!!

   Amanda