Hello thanks for asking from HCM You have anxiety, depression and panic attacks. You underwent heart examination and the results came fine. Still you have fear like something going to happen, this could be happening due to health anxiety. I would advise you to consult a psychiatrist for treatment. Reassurance and counselling will help you to come out of fear of serious illness. For severe anxiety, panic attacks medicines like Propranolol, low dose benzodiazepines can help to reduce severe symptoms of anxiety. SSRIs like Fluoxetine, Paroxetine etc will help to reduce frequency of panic attacks. Relaxation exercises, yoga etc help to relax yourself and have equal efficacy to medicines. Thanks, hope this helps you.