Butt sex

I just got off of my period yesterday and my boyfriend and I were having anal sex and he finished inside my butt. I know it was in my butt but I just want to make sure I can't get pregnant from butt sex and like even if it dripped close to my vagina I won't be in trouble. I cleaned out my vagina right away with the sheet we were using and then I cleaned it out but rubbing a tampon along the walls of my cagina and now I have a tampon in there even though I not on my period. I look to my eve gals for reassurance so just tell me whatcha think.