Just my two cents, but if I were in your position, I would just wait it out. Decisions have to be made by/around April 15th, so the program will most likely try reach you with their decision relatively soon (though, I have heard of some people not finding out until the very last minute). I know how much waiting sucks, but you have made it this far and you would not want to possibly ruin your chances by sending an email.
Best of luck (and try not to go crazy)!