Why why why

So I hooked up with my ex about two weeks ago. Prior to that I did get my period the week before. We used protection but the condom slipped off inside of me (yes we got it out). I also took plan B following morning. Then the week after I started spotting which feels like it turned into another period. I’m thinking maybe I was ovulating but my anxiety has me thinking I’m preggo and I’ve been driving myself crazy smh. Can anyone relate? Plus I’ve taken plan B before and it didn’t work and I ended up pregnant. So imagine my frustration right now.....update 12/16/19 still no period that’s now 2 weeks late I’m trying to be optimistic and say I’m not pregnant but my ex thinks I am and is extremely happy smh. Not going to stress myself out and wait it out the rest of the month 🤞🏾.