Pregnant??

Tia • i'm fine in the fire. i feed on the friction. i'm right where i should be. don't try & fix me.
I have a question. I had sex for the first time in months this past Sunday. It was unprotected. My period was supposed to start 2 days after. But now it's 4 days late. Could I be pregnant?? My period is never late. And it always starts 1 to 2 days before the actual date that <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> says it'll start. The only time my period was late, 8 days, was when I did ab workouts & squats for 4 days. I stopped because my period began. That was a very long time ago tho. I haven't changed any routine or anything. I'm the same. Life's the same. So am I pregnant?? I need some advice before I discuss it with my boyfriend.