Is this a common thought\feeling when depressed?

Many years ago I was depressed and managed to get over it to some degree. I remember though being asked to imagine what my inner body looked like by a therapist. It was hard to do that and scary and at the time I remember replying that I felt all my insides were green and rotten. I know it sounds awful but that is how I visualized myself.

Years later and again depressed I don’t have this image. But I do feel any thing wrong or amiss with my body spells sure doom. So much so I am scared to seek help and dread any little health issue that comes up. Is this common in anxiety and depression. Have you had a similar experience. Or am I just neurotic?