Really scared please reply! Teen freakout!

Hello everyone!

My boyfriend jacked off and cleaned up with his shirt, and then started to rub on my butt and I think even about my vaginal entrance, and I’m scared I may become pregnant.

My period is 9 days away.

If I get my period in 9 days would I be in the clear? If I get my period in 9 days will I 100% Not become pregnant?

I’m so confused on how to word this because I’m on the autism spectrum, so plz explain my chances.

What are the chances I’ll become pregnant from this? 0%? 50%? 75%?