My period is late by 3 days 🤔🤔

Emily

Hey guys, I had protected sex (a condom was worn) on December 6th, the male did not cum, and my period is late by 3 days which is very irregular for me as usual my period comes early. Is there a chance I could be pregnant, I’m under a lot of stress as well at the moment which could be causing my period to come late? Any advice please ☹️☹️