Very technically speaking, it’s not over until you’ve officially been rejected, or until the first day of classes begin, whichever comes first. However, if it’s end of February and you still haven’t heard ANYTHING, I would begin to consider that your odds of getting in are pretty low. However, this is information based on previous years and info that I extrapolated from the interview process. I am a current applicant and am by no means an expert or knowledgeable per se. All you can do at this point is send a Letter of intent/interest and hope that is helps you.