Ok... Last night around 10 at night I had this weird fluttering feeling in my heart... about 5-10 minutes later I had extreamly sharp pains in my heart I had a hard time breathing... I felt really dizy and light headed... this pain contiud for about 2 to 2 1/2 hours... when I was finally taken into the hospital they did a bunch of test to see what was wrong... they all came back saying I was healthy... so what might this mean?