Hey i'm demi i have bad anxiety i step thinking my heart gonna stop ??

Health Anxiety: Excessive anxiety related to physical symptoms or a medical condition, sometimes referred to as "health anxiety" or "hypochondriasis" is typically thought of as a type of obsessive compulsive disorder: People are tormented by repeated, unwanted thoughts of their health fear: http://psychcentral.com/lib/ocd-and-health-anxiety/ It responds to Exposure and Response Prevention treatment -a form of CBT