What do you guys think?

I'm on the Nuvaring and I take it out every three weeks to have a period. It's been 5 days since I removed it and I'm not even cramping. Last month when I took it out my husband and I did have unprotected sex where he came in me. I know there's always a chance you'll get pregnant when you have unprotected sex but I still had a period after the unprotected sex. Is there a chance I still could be pregnant even though I had a period a couple days after the sex? I'm sorry if I seem naïve and stupid I just really don't know