Hi I'm 19 years old and a few days ago I found a lump about the size of a marble on my left breast. Its hard, red, painful, and moves a little if I touch it. Its the second one I've found this year. The first is only about the size of a pea and it doesn't hurt at all. Breast cancer runs in my family but I'm afraid to go to the doctor. I'm terrified that they'll say I have cancer.