Breast cancer possibility?

Bold & Brash

Ok ladies, so I'm 16 and my breasts size is DD I was wondering (and I know some of you might think I'm stupid for asking) if when someone constantly "pinches" your nipples if it can cause breast cancer? And if women with bigger boobs are more likely to get breast cancer? Please dont hate on me for asking, I just am not really sure. I used to have a friend that always did it and I didnt let her but she would do it out of the blue