I am 12 years old and a boy. One of my nipples seems to be swollen and is bigger than the other? should I worry?

ANDY'S ANSWER:  No, it's quite normal for boys to experience some changes in their nipples as well as they start puberty. It could be a little tender, but it will go back to normal again and you don't have to worry that you are growing breasts like a girl. You aren't.