Can I be pregnant?

Hello,

I was wondering if they can get me pregnant… my boyfriend bent me over and we were both naked and he put his penis in my butt but it felt like it touched my vagina just a little bit but did not get pushed inside. I am 8 days away till my period starts if that changes anything. PLEASE LET ME KNOW!!! Please don’t judge I’m very asking to find out what to do. It was also only 10 seconds if that changes anything.