Could I be?

My last period started on Oct 9 and ended in Oct 13. On Oct 12 I had sex with my bf and now I'm kinda worried that there is a possibility that I might be pregnant. I just need to hear it from someone more experienced. I havnt taken the pregnancy test because it's way too soon and I know j have to wait and see if I miss my period next month. My periods are pretty regular btw. Any advice? Please!!!