What are the chances of me being being pregnant?

I gave him a blowjob and he came in my mouth. Shortly after that he and i had unprotected sex. We were both virgins. He did NOT cum inside me, but i am worried. This also happened while i was halfway through my period. My period started wednesday, i had sex friday, and my cycle just ended Sunday. I don't think i can be stressed out/wait for a month to know if i'm pregnant or not.

What are the chances of me being pregnant? Are the chances high or low?