<p>I’ve done it a few times but this was for universities who virtually received none of my materials, one of them ( Illinois- UC) still have nothing of mines which was a travesty for me since I really liked the school and had long plan to meet their priority date. Perhaps your teachers just have not submitted the recs yet, check with them. If you already know the teachers did submit recs then I would simply contact admission office ( I’ve always done it through email) tomorrow sometime.</p>