Hello thanks for asking from HCM You have phobia of illness which is also called as hypochondriasis. Hypochondriasis is a psychiatric disorder with main symptoms of anxiety. Individuals have anxiety of getting some serious illness. Even all investigations come normal. I would advise you to consult a Psychiatrist for proper treatment. Medicines of SSRI group are commonly used in such type of illnesses. Fluoxetine, Paroxetine etc medicines are used commonly. You need to take a prescription of psychiatrist for these drugs. Apart from that try relaxation methods like progressive muscle relaxation exercises, yoga, meditation for keeping your anxiety low. As psychological trauma aggravated the condition Cognitive Behavior Therapy can help for cognitive restructuring. Thanks, hope this helps you