Kittycat5
Bluelighter
I agree with Mike.Vick. Josh, go to see a medical professional such as a doctor or even a cardiologist.
Really this is the best and only advice. I know OP said their doctors said their heart checked out, but be it a disorder a specialist would only recognize, or anxiety or anything else, does anyone really feel comfortable suggesting anything? Im a pharmacist and dont.
Oh forgot, Josh7000, how much Elavil you take and for how long? Amitriptyline, especially in higher doses, can cause tachycardia and sometimes actual conductance issues. Its usually transient but not always.