I've had a decent amount of growth in the past year, I'm currently a large B cup. One thing I noticed is that on one of my breasts starting on the areola and going onto the nipple itself, I have a purplish vein, it seems to be darker some days and lighter on others. Has anyone else experienced something like this? I'm not sure if maybe it has something to do with growth, in the past 4 months or so my areola has grown significantly and they're constantly puffed out, it's like I have a half of an oversized golf ball poking out.

Nice the girls grow so good Michelle
As there are no replies why not visit a doctor,better then to doubt.

Breasts do change and sometimes more veins appear in girls with very pale and more transparent skin.  But there are some venous abnormalities that you probably should also have checked out by a doctor for your own peace of mind.  When I had some veins showing and searched the net the result was almost nothing worthwhile for a transwoman.  So I talked to my wife who's an RN and she reassured me that I was o.k., and could wait until my next regular Dr. appointment.

I have an appt with my doc in six weeks, he's going to look at it then. I called him and he said that I shouldnt worry about it, that all breasts are different and I have a lot going on inside there right now. It has seemed to coincide with my nipple/aerola expansion which seemed to almost happen overnight, one day I took my shirt off and saw them and thought "holy crap, my nipples are huge!" and they've been changing ever since.