Breast Cancer concern!?

Hi

I have had a beauty mark spot on the lower half of my breast all my life, it is quite dark/black round in shape, well it was, I have noticed a change in shape last year but was not really concerned about the spot, now lately the shape has somewhat changed and slightly grown in size, I have also noticed another spot recently which has never been there before, it is close in size to the first spot….I am 22 years of age, I have read quite a few articles on breast cancer and am not sure if it is related to that. I do not have any lumps or getting any discharges from my nipple, some symptoms vary and could this be a skin problem ? there is no itching, or breakouts and it is not on the nipple area ….what should I do?