Can I still be pregnant after taking plan B?

Zoe
So I may just be crazy and paranoid about this but I really want to hear what y'all have to say about this. So me and my man did the thing and I had to take a Plan B the next morning. I was originally supposed to start my period like 2 days after the day we did the deed but didn't because of the pill. 5 days after I took the pill I had a normal period. I just need to know if that means I'm in the clear.