Im 15 years old and lately found that I had hard lumps under my nipples. I havnt done breast tests till now so who knows how long theyve been there. Also it seems my right breast sometimes droops more downward than my right and my left nipple is sometimes a few shades darker than the other. Should I be worried by this? I thought it might be because I tend to wear a bra while sleeping because I cant stand having them hang loose Dx eurgh.

Im gratefull for a fast responce.