I noticed recently that one of my breasts is bigger than the other, and it seems that the nipple is darker than the other one. I tried to test if i can feel any irregularities but since my breasts are small i can't tell if what im feeling is my ribs or something else. Im still a teenager and im concerned that i might have breast cancer. I have a gynecologist appointment but its in 2 months, so I'm scared the situation will get worse untill then. Are these symptoms of cancer, and if so, should i make sure to consult a doctor sooner?