not sure if precum did or didn't get in, But if it did,?

My boyfriend and I are both virgins. I also still have my hymen attached. Yesterday him and I had anal sex. He did not cum. But there was precum. I know it's not possible to get pregnant from anal sex. His penis was never injected into my vagina but it did rub the outside of it; vuvla I believe it's called. I'm not exactly sure if precum did or didn't get on it. But if it did, could I get pregnant . He also fingered me, my worry is that his finger could have pushed precum on my vagina inside of it. Or maybe there was some on his finger? I do tend to over worry a lot. But I rather worry than not be worried at all. I've read several places that precum does not contain sperm. Only if after the male had masturbated the last term they urinated. Which he says he usually always does either way. But after reading my situation; what do you think my chances of pregnancy are? High? Low? Please help me out. I can't stop worrying.