<p>yeah well it's not that uncommon for me either... usually during the school year I got around 5 hours of sleep and often less</p>
<p>You should never cancel your scores unless you did <em>extremely</em> bad which it does not sound like occurred. Wait for the scores and then if unsatisfied retake them. Admissions staff WILL (even if they say they only look at the highest score) think poorly of you if you repeatedly retake tests where you already scored high and you don't improve by much...you definitely don't want the image of the desperate overachiever perfectionist type.</p>