Little white hairs growing on boobs???

So I'm like 99% sure I'm pregnant, (I just need to take a test to make sure) but today I noticed tiny white hairs growing from my boobs (sorta close to my nipples). Not a lot, its very sparse and spread out, but I was just wondering if any other ladies had this and if they knew what it was? Is it a pregnancy symptom?? I read online about it and found many women who got them while pregnant or right after giving birth while breast feeding, but I havnt found a single place that expkains what or why they are?

Does anyone know??