I always found that i felt invisible while fasting...not invisible so much as it was as if nobody noticed me. Like i was just floating around everyone unseen. I think while fasting the ego simply collapses in onto itself like a dying star and the person who you previously where disappears. You are powering yourself now on fuel far greater then that of calories via food...sometimes while fasting i did not even recognize myself...perhaps because my self was no more. This extended fast is sure to change you for the rest of your life. Nobody is recognizing your change because there is no You anymore to be recognized as changing. You are now somebody totally new with a new type of refined ego. lol..err....maybe..Bravo on your fast.