Sex right after period

Tomorrow is technically my official last day of my period but I was pretty much done by today. My boyfriend and I had protected “sex” where he basically just stuck in his dick in my vagina because we just lost our virginity 2 weeks ago and I’m still not used to the pain. He barely moved and didn’t cum at all. He wore a condom and I know the chances of pregnancy are slim with this but what are the possibilities ? Also is protected sex RIGHT after your period risky or safer? Should I chill