is this possible?!?!?!

[mkgirl01]

All of a sudden im nervous that I have a heart arrhythmia..... i have had tests such as 4 or 5 EKGS, echocardigram, chest x ray, and a holiter monitor... it all came back normal.... is it possible that i still could have an arrhythmia ???


And my throat always feels tight whats up with that??