I've got the same thing right now, at CD 24, 10 DPO - crossing fingers for both you and I that it's a valid sign!!!!!!!!!!!!!!!!!!!!!!!!! :-)
That is a huge sign of pregnancy. Take a test in a few more days.
I remember my boobs looked more like they belonged on an alien than a human when I was preggers with ds1. Veiny.... heck ya. Maybe test again???? I just checked mine, hoping I looked like I needed to be on a spaceship. lol