I feel discomfort with my fast heart beat and feel in my centre of chest like in my breath pipe?

See a doctor--card: Fast heart rates that are producing uncomortable symptoms should undergo an evaluation. This might involve patient activated monitoring (to assess the rhythm), as well as structural/functional assessment of the heart. A structurally normal heart should provide some reassurance. Treatment options can then be discussed. General health/medical conditions including lung and thyroid eval.