I have a lot of these symtoms too & like you I worry a lot when I'm in bed I think it's because you think more & when my partners asleep I feel kind of alone & scared I went to the doctors a lot petrified of cancer I went every week swearn to them I had it somwere I was google'n my symtoms ( worse think you can do ) Evry little ache & pain scares me iv stopped thinking about it a lot & just try to dismiss the awful thoughts but it's always gona be in the back of my head that I have it and no1 knows :/ x