small bump under nipple

Erica
So I have a small (no larger than a pea) lump that I feel in my breast right under my nipple. I know it's normal to have bumps on the areola, but this bump is different than that. I'm just 17, so could this be a sign of my breast growing and me still going through puberty? Is it just a small bump from a blocked gland or what? I'm kinda freaking out!! Help please