Hello, I am female, and have had breast soreness for at least 3 years. Is it normal for breast to be sore like? My breast feel firm. The most thing I am worried about is if I have some sort of cancer. I am only 17. It is uncomfortable to lay on my stomach, but when I wear a bra I fell fine. Now that I think of it, ever since I started to developed, my breast have alway been sore. Please help! Thank you for your time!