Since you have had this problem for at least a year I really don't see any connection to Breast Cancer, especially in someone of your age. I see also that you have posted about another skin problem so my best advice for you at this time would be rather than searching on the internet you should talk these problems over with your Mother, or whomever, and then make an appointment with your Family Physician to have a general examination and advice as to the severity of your issues. Remember that the first place you should think of when it comes to matters of health is ALWAYS your Family Doctor. Take care now and make an appointment with the Dr; you are far too young to be researching and worrying about things like this.