is it possible i could get pregnant?

Hi big,

Yes, it's possible.  You likely had sex just before/near when you ovulated.

Odds would be about 1 chance in 5.  That's as good as they get.

Good luck.

Yup, if you fit the normal period timeline, you had sex while you were at the peak of ovulating. Google period calculator or period tracker, and use one of those tools to check for sure.