I've been nursing for 6 weeks now. My breasts have been the same size pretty much since he was born. But within the last week I've noticed light pinkish / purplish lines looking like wide vessels branching out from my nipples. They look almost like stretch marks but they're not indented or shiny like stretch marks normally are. (I have them elsewhere). This isn't some strange sign of mastitis or infection is it? I can't find anything about this online. They don't look like normal blood vessels or spider veins. They're thick and dull. I'm stumped. Just want to make sure everything is ok and normal.