Anti-n antibodies

So, back story. When I had my son back in 2018 I had a totally fine pregnancy. No RH negative Nothing. Totally, completely, fine.

Skip to this pregnancy, I'm currently 21 weeks and back when I had my first blood draw back in April I popped a positive in anti-n apparently (Didn't know this. Only learned of it when I switch to midwife) I also did have Covid back in December, lost taste and smell for ten days, recovered completely, super mild infection. Not vaxed. So, has someone popped a positive for anti-n and what did that mean clinically to y'all and the baby? My midwife's believe this is due to my prior infection but there is just so little known right now. Can't find anything on Google.