Just making sure..

This might sound dumb but I just want to reassure myself. My boyfriend and i had sex today and I’m ovulating ( I didn’t know I was) we didn’t use protection cause it was all in the moment ( he only did a few strokes) but he didn’t cum and neither did I. So as long as he didn’t cum in me the risk of me being pregnant is not possible and if it is it’s very slim right??