Could I be pregnant ?

Help! Every month my cycle comes in time, I’m never late, literally never late! I had my last period towards the end of October on the right day it was supposed to come. Then comes November my ovulation week was November 6th - November 12, my ovulation day was the 11th. I had unprotected sex on November 13 which glow said my chance of pregnancy was a low of 3%. My cycle was supposed to come on November 25th but as of today which is November 27th, it still hasn’t come. Just wondering if I could potentially be pregnant.