thank you for your query. If a patient would have come to me with your symptoms, i would have first referred him for a thorough cardiological examination and would have advised an ECG/ Echocardiogram, and a chest x ray. Only if no cause could be found even after that, I would evaluate for the presence of a generalised anxiety/ any other anxiety disorder. A diagnosis of generalised anxiety disorder requires detailed history taking and a thorough mental status examination of the patient. if GAD is diagnosed, I usually prescribe an antidepressant (like setraline/ escitalopram/ mirtazapine etc.) along with a benzodiazepine (like clonazepam/ etizolam/ lorazepam etc). I prefer tapering off the benzodiazepine over a few months, before it forms dependence. depending upon individual case, i also refer for some relaxation excercises, behavioral therapy or biofeedback. I would suggest you should visit a cardiologist followed by a psychiatrist for the proper evaluation and management for your condition. Hope i ve been able to satisfy your query. please free to contact me for any further clarifications. best of luck.