Need advice!

Tori

A couple weeks ago me and my boyfriend were together and making out, things eventually escalated and he asked if he could stick in just the tip I allowed him to do it, only half of the tip went in, his dick was dry and he hadn’t came except for about an hour to an hour and a half prior (oral sex) we are both virgins, and my period is three days late, I’m irregular and stressing over all my exams. Could I be pregnant?