Hi guys, for the past couple of weeks i've noticed a quite large about 1 inch very tender and sore lump under my right nipple.. it doesnt seem to be going down or anything im getting quite concerned. does anyone know what this could be? I'm 17 by the way. Do i need to go to the doctors????
Cheers.

yes, go to a doctor to have it checked. I don't want to scare you, but years ago I dated a guy that had breast cancer. It is not just a female disease, although it is rare it men. The guy a knew had a great outcome and that was 25 years ago. He had no further problems, but please get it checked. Don't misunderstand, it could be many other things, just be safe.