I don't think you should worry yet...I interviewed 1/14 and they told me that the adcom will meet in a couple of weeks and also that they are behind b/c of the holidays. So, you should be in the group that they review soon..I may have to wait for the next round though! Good luck..
I heard back from them exactly one month after my interview. But given the break there would at least be some extra days added. Also, I got an email with my result from them in response to my inquiry about what was up. They sent the stuff in the mail a few days later. You might try emailing.