Okay, I'm 13, and my boobs are really really hurting, like I can't lye on them in bed and it hurts if I run without like a bra or anything.. are they just growing more because I'm only a B but everyone in my family is C or bigger.. or is there something wrong?

At your age you are just growing more. Have you started your period yet? If not, this may be the beginning of your period. It also could be premenstrual symptoms if you have started your period.

Yeah I have started, but I've just finished my period? Xx

This is normal for your age. Nothing to worry about.