Pregnant?

I need advice. Me and my boyfriend had protected sex Dec. 27, and we took the condom off for literally 30 seconds he was never even close to finishing. I took plan B later that day. Got my period the following week as planned. It’s now 2-14 and I was supposed to get it 2 weeks ago and I haven’t. Idk what to do. I really don’t think I’m pregnant though. It says I’ll get it in 10 days.