Basically everyday I think I’m gonna die or I’m sick I’m a otherwise healthy 28 year old but since I was 12 despite no major health issues or family deaths I’ve had a strange obsession with health anxiety hypochondriac I self diagnose myself and think I’m dying of everything I’ve thought I’ve had lung cancer hiv everything and anything it’s like I read about something online and it sticks with me to the point it ruins my life like I can’t function and I feel selfish because people actually have these illnesses and here I am healthy feeling this way my latest obsession is I heard of a famous singer who has a incurable brain tumor called glioblastoma and since I found out how deadly it is I’ve felt like I have this and that im gonna die from it that if someone like him has it what makes me different? 
I just need advice maybe comfort someone to talk to please…