I'm 13 and my boobs have gotten bigger recently (38B) and on my left boob above my nipple it feels a little hard I don't know what this is. I've never worried about it but I was just thinking about breast cancer. The only symptoms I have is discomrfot (I can't lay done on my belly bc my boobs hurt I have to have a pillow adjusted) and maybe lumps it just seems a little hard in areas. This may just be me getting older. Please let me know.