What are the chances of me getting pregnant?


I had unprotected sex with my boyfriend for the first time (bad idea). He pulled out and he did not cum inside of me BUT it was on my butt and it slid down to my vagina. I’m not sure it went in but I’m scared it might’ve. I got off my period less than a week ago, are my chances of getting pregnant low? I think they are but I just want reassurance since I’m panicking and I won’t be able to calm down until I get my period in December 😭