5 days late, when do I take a pregnancy test?

Natalie
So I had unprotected sex a couple times during my fertility week or ovulation week whatever you want to call it, and he pulled out, we did it a few times that week unprotected, and that was a while ago, I'm 5 days late, I'm not nervous or anything because I had a really really stressful weekend the week before I was supposed to start my period, and I know stress effects your period, when should I take a pregnancy test? Or should I just wait it out a little more and see if my period comes?