I recently talked to one of my professors about this kind of thing, she said that students that have not heard back are not necessarily in a bad place. It will mostly depend on the types of schools you applied to. In general, R1 schools have mostly sent out offers, they aim to get their first picks and are in competition with other R1 schools. R2 and below are still pretty much game. There are other factors that contribute to the decision making process, including school size, funding, etc.. Of course, this is pretty broad. If you are in contact with your POI you may want to contact them for a brief check-in by the end of the week. Any others in the forum got any thoughts on this?