It's my big toe/ankles/knees.

My wrists and elbows hurt a little. (moreso wrist, but that's because I have bad posture...which i need to work on)

I also remember that I ate 2 bags of dove dark chocolate and ate a pint of ice cream in the past 1 1/2 weeks. I ate most of the chocolate preceding the pain. My mood has been terrible the past 2 weeks, including this week, too.