Haven't freaked out like when I can't find my keys, glasses, cell phone or iPad.
But I'm disappointed in myself for misplacing it. I passed out last night so it might have fallen somewhere near my bed. I also change at work and I might have taken it off and left it in the bathroom. Building maintanance hasn't gotten anything, but I still need to check with work and the cleaning staff if possible.
I just can't believe I don't remember when I last saw it.