I'd normally have walked by and never felt this before, but now that I've finally "entered the game" so to speak, I feel it.
My guess is the ascending full moon might have something to do with it. I've heard that the full moon is the most powerful time for magic, and that tends to short circuit some people into mood swings. I guess just realizing it was happening is a victory in itself.
Please, witches, let me know your thoughts if you feel want to share.