Plan B

I just had my period and it ended December 3rd. I am not on birth control and had protected sex on December 5th, but when I got off the condom slipped and was still inside me (the opening was outside of my lips obviously) but I took plan b just Incase. Should I be worried? And am I going to get my period again very soon? Or just wait until my next cycle comes (which should be around Christmas unfortunately 😂). I know plan b will mess up my cycle a little bit, but i’d still like to know.