Disc-shaped mass under nipple has become a ball-shaped mass?

[Hummingbird]

I have gynecomastia, though it's starting to get better in the right nipple (you can barely feel the disc shape there anymore), but in my left nipple the disc-shape has become a ball-shape. There is also this lump on the skin that resembles a nipple, and you can feel this thin rod/vein when you squeeze it. I am 14 and going through puberty, but I'm still anxious about the small chance that it could be breast cancer.

[Paa_Paw]

Men do get breast cancer, but rarely and even mor rare at your age. even so, a change in the breast would cause me enough concern to make an appointment with my doctor.   This is not an emergency, but it is something that should be checked out. 

[Hummingbird]

After feeling it a bit more, it seems like the disc-shaped mass in my left nipple is still there, but it is super thin). The ball-shaped mass seems to be connected to the disc-shaped mass.