Hi there, i'm 17 years old and a couple of years ago i began to develop a lump under my right nipple, i've been to the doctors twice now and both times they told me that it was a symptom of gynecomastia, however it continues to grow and doesn't seem to be getting any smaller. I feel no pain in the lump and it just seems to be getting bigger, i started puberty quite late (14) and im not sure if this is a puberty thing or should i get it checked out again? Thanks