Period late!!!

Sam
It says my period is 18 days late. I was supposed to have it December 16 but didn't. My last period started November 12 and I had protected sex the day before but he didn't cum. I had protected sex 3 times the weekend of Dec 18-19. I had a couple cramps but that's it. Ive also Bren peeing more frequently and that's started around the time i should've gotten my period but didn't. What could be wrong? Could I be pregnant? 😟 Hope not because with the holiday's and me just graduating college, I've been drinking a lot.