you may need a more comprehensive cardiac work-up so my advice to you would be to see the best internist/cardiologist in your area for some additional tests. i don't know what studies were done in the hospital but you may need others perhaps even an angiogram.
what to do if you cant get a diagnosis but continue to suffer from chest pain and elevated heart rate? . i have been seen by 2 cardiologist my personal cardiologist and one in hospital where i was admitted and observed. i was told my heart enzymes were slightly elevated and heart rate was up but they have no idea of why i am experiencing the chest pain or why enzymes are elevated not the cause for elevated heart rate. during my reading i have found women usually get misdiagnosed and that frightens me. i dont want to be suffering damage to my heart and no one is preventing this from happening. .