What are my chances of being pregnant with my boyfriends precum?

Emilia

We were play fighting before sex and he sort of forced himself onto me. He got in me without a condom for about 10 seconds before I could push him off of me. He hadn't came for 3 days prior. I know my chances are low since it's precum and it was for 10 seconds but I was at peak ovulation. So what are the chances? We are both adults and have steady jobs but just not emotionally ready for a kid.