Need some advice!

First I'll say a little about myself. I am a 22 year old college student. My boyfriend of over 4 months broke up with me on thanksgiving after meeting my family for the first time. I was so upset that I texted one of my guy friends (who I used to date) to hangout a few days later. One thing lead to another and we ended up having unprotected sex. He did cum inside me when I was on one of my green days. How likely would it be that I'm pregnant? No mean comments.