Very depressed and worried about life and the afterlife? (no mean comments please)?

That you mention every ache or twinge makes you think you are dying, you are clearly dealing with psychological issues (no offense intended) that causes you to obsess over death at a very unhealthy level. Please strongly consider seeing a therapist, even if you are hesitant. No one should have to live their life as stressed out and afraid as you do. 10+ years is enough.