Melissa I hope you feel better soon. I too have had that experience. I refer to it as my robot mode or autopilot, when I become so terribly depressed there comes a point where the only way I'm able to cope is to basically shut down emotionally. I don't purposely shut down it just sort of happens. Life simply passes me by while I go through the motions of it. I cannot hide it from my husband because I live with him but I am able to put on a brave face briefly to deal with a person or situation I cannot avoid. I wish you all the best and just hold on because it will eventually get better.