Can you really get pregnant from anal???

So I just read something from <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> that said you can get pregnant just from anal??? Is this true?

It said something about seminal fluid going down to the vagina or something which I guess would make sense, but how does it actually get up there if it’s only at the entrance?