I'm 15 years old. I got my period at the age of 11/12. I always thought that my breasts were "normal", so I never said anything about it to anyone. When I feel my breasts, I can feel something inside that's the same shape as my breasts. I also have a rash on my breasts. My sister said something about there not being anything in her breasts (long story...), and I was like, "there is something in there!", and she said something about breast cancer... Ever since, I'm convinced that I might have cancer! Do I??? Is it normal what I have????