Hey. Im 15 years old and latley have realised i have hard lumps under my nipples. I never did breast checks before so who knows how long theyve been there but should i be worried?

Also my right breast sometimes seems to droop more than the left and the nipple is sometimes a darker colour than my left. I was unsure about this too.

I wasnt sure if it was maybe because I wear bra's often to sleep. I can't stand having them hang loose o-x eugh.

Im asking here because i have no desire to go to a doctor and have to strip down to show him and i feel uncomfortable talking to my mother.
So yeah. Im gratefull for fast responce.