Im working myself into a panic because i think their is something wrong.with my heart. it always beats fast and has a murmuer. i don't know what to do?

You have anxiety... : ... And need to be evaluated and treated with therapy alone or combined with medication. Talk to your family md or a psychiatrist. Anxiety is the commonest psychiatric disorder and very treatable.

Talk tO your MD: Clearly you have developed anxiety around this issue...Gtalk to your physician about treatment & some congnitive behavior therapy.