i totally know what you're talking about. i imagine it's worse cause you travelled around in so many places. it goes away eventually as your present surroundings become your norm again. *hug*. you'll be yourself again soon.
I love William Gibson's description of that feeling, from Pattern Recognition: ...her mortal soul is leagues behind her, being reeled in on some ghostly umbilical down the vanished wake of the plane that brought her here, hundreds of thousands of feet above the Atlantic. Souls can't move that quickly, and are left behind, and must be awaited, upon arrival, like lost luggage.