For the past year my nipples have been appearing slightly puffy/inflated. I am not overweight nor does this problem seen to occur all the time - I have noticed that they seem this way specifically when it is warm. However they very rarely normal (hard, not puffy). I am currently still going through puberty and from what I've read I've believe it might be Gyno, but since my case isn't continuous - I think it might be something else. But I am not to sure. Any help is very much appreciated, Thanks