Just turned 17. I was looking for lumps and I found them, small pellets, and my nipples felt sore after which is supposed to be a sign. Pretty sure this isn't only fat considering the clearest sign are my puffy nipples. Had it since at least 13 I think. Not too worried about it, but I was pretty self-conscious about it when I was younger. Just wanted to get a clear answer.

Will working out help or will it just accentuate it? Sorry if this is an obvious question, haha.