breast cancer..?

hannah
so recently i've noticed that my right breasts is larger than my left. they're both always a little sore but my right breast is always MUCH more sore. i've noticed some lumpy type of feeling in it but i'm not sure. im not sure if my age really determines anything with that but i'm 17... should i see a doctor? is this something i should be worried about? has this happened to anyone else?