Just took Plan B. PLEASE HELP

So I was planning on starting my period today or yesterday but I didn’t come. My boyfriend and I were having unprotected sex and he came in me. I immediately remembered that I hadn’t taken my pill and we ran to target to get a Plan B.

This morning when I was going pee there was this like long snot thing coming out of my vagina and I pulled some of it and this is what it looked like:

Am I pregnant?? Is this just what happens after you take a plan b?? Please please help