Uea it's ok completely normal :-) im pregnant with my second as well and do not remember getting them last time but I jave a.couple this time lol just bc of blood flow amd such. At some point this has nothing to so with the veins but you mau start to leal or ne able to.squeeze a.yellowish substance out.called.Colostrum that is your babies first milk. Then your acrual moll will.come in a few daus after.giving birth :-)
Totally normal, this is my first abd my mom kept telling me when i told her i was pregnant. Oh wait till you get them blue veins on your boobs! Thats how i knew i was pregnant.. lol not too sure what causes them, maybe something to do with developing milk?