Hey Megan,
I've also applied to University of Chicago, University of Pennsylvania (UPenn), University of Michigan, and Washington University in St. Louis (WUSTL). I just had my interview with UPenn and it went well and I should hear something soon. As for the other schools, I probably won't hear back until late Feb/early March. The wait is killing me, so you're not alone! When did you submit your apps? Oh, and my first choice is UChicago as well. I hope we both get in!
--Kristi