Of course I don't mind. I applied to U of Chicago, Yale, U of Mich, SUNY Buffalo, Indiana U, and Eastman. I have interviews at Indiana and Eastman. They might have notified me so early, though, because they had December 1st deadlines. Maybe your schools' due dates were just later?
Still, I think that mid-January is too soon to worry, but then again, I understand why you are freaking out. I was surprised when those schools notified me of interviews as early as they did (IU emailed me in mid-December and Eastman in early January). I expected to hear something in February, though.
Anyway, I'll let you know if/when I hear from the other schools. Good luck to you.