I'm 13 and I'm a C bra. The problem is that whenever I take off my bra, my breasts always hurt and today I found a small bump on my nipple and it hurts! I have not just started my breast growth; they started at the end of when I was in 4th grade (lol) and now I'm in 8th grade. I don't know if it's cuz in gym class we were playing a game I I got tagged really hard on my chest and it did hurt. So do any of you know why my chest hurts really bad?