Plan B questions?

Hey y’all! This is my first post on here, so I’m new to this. I also might be freaking out for nothing, but hey why not give this a try. I got off of my period on December 7th, then took a plan b on the 8th two hours after having unprotected sex. He didn’t cum in me, as far as we both know, but I just wanted to be extra sure. The following Friday (the 14th) I randomly started to spot/bleed but it only lasted about a day or day and a half. My period is suppose to come today ( January 2nd) but it hasn’t yet. I would also like to point out that that I took a plan b the month before (November) to ease my mind yet again because I’m a worry wart haha. Long story short, I’m worried I could be pregnant? Please be nice when you comment, thanks in advance! :)