You have to examine your breasts regularly, looking for lumps or other irregularities. Breast cancer is exceptional with young people, but does occur. It’s good to get in the habit of checking, especially as you get older. When you start young, you learn to know your breasts, knowing which changes are normal during your menstrual cycle. The best time for an exam is in the week after you had your period. Look for lumps and swellings.

How to do it?
Which movements to make when you examine your breasts?
What to do if you find a lump?

I am 15 and I discovered a little lump under my right nipple. Can guys get breast cancer?