please help

Aimee • 24 🌿🦋🌻 PCOS
So my period is never late and I mean never ! It's always a few days early or right on time. And I'm currently 3 days late. I'm kinda freaking out cause of it but I want to know what you guys think ... should I  test in a few days  or should I just wait till my next period is due and go from there ?
 My bf used a condom once but we had sex 2 possibly 3 times when I stayed over last which was a week after my last period sooo ... 😕
***** please don't comment saying I'm over reacting it's only been 3 days .. I'm never late, this is the first time so obviously I'm going to freak a little !*****