Having sex in college .

So this is my first week back at school and my fiancé spent a couple of days with me to get me acclimated. Instead of spending the night in my dorm we been having sex in his hotel room, my During fertile window. Today he had to go back to California where his jobs is. But I have this feeling that we're going to be pregnant just because of how much we're having in the week he spent with me. I know I have to wait until I miss my period. But I don't know how to feel about the situation. Anyone pregnant women that are in or going to university. Do you have any advice?