Am 24 years old non smoker. I have an anxiety of getting sick by big disease which gives me various symptoms and these symptoms gives me more anxiety. Symptoms like shaky head, fast heartbeat, sticky mucus, throat pain and many more I mean whatever the new I read on google start happening to me. I have done my full health check up in which my ecg, cholesterol and everything comes normal but I still overthink that I can have heart attack or cancer am 62 kg in weight and I do workout regularly how to get rid of this? How can I change my thinking that am all well.