Where am I?

I often wonder, where am I? Where am I?! The entity that is me, where is it? My first thought is that I might be in my head, but that is not right because, that is 'My' head. I am not in in my heart that is 'My' heart. So, where am I? Am I a free floating being that lives inside of a body I call my own? Am I free to float as seemeth me good to all parts of 'my' body? My ear, my nose ... my index finger? If in the course of vacationing to my finger it gets cut off am I gone? What would I do then? I have no mouth with which to say, "Hey, don't throw me away I am the boss!!!" I would be disposed in some biological hazard bin without even a second thought.
Are there people out there without a self because they were vacationing in a finger during a construction project and the ill fated finger was hacked down in its youth from the blade of a saw? These are just things that I wonder about.