Hi and thanks for writing to me.
Growing up can be really hard and puberty sometimes only makes things even more difficult. Changes to your body can make you feel different about yourself and it's something lots of young people go through. But that doesn't make it easy.
It doesn't mean that boys in your class should say these hurtful things about you either, that is bullying. This can knock anyone's confidence.
I wonder how you would feel about talking these problems through with a ChildLine counsellor? ChildLine gets calls from many young people with all kinds of problems, so the counsellors will know a bit about what it is like for you.
Why not call us on 0800 1111? This call is free and confidential and no one will know you have called. Or you could log in for a 1-2-1 chat online.
I hope you'll give this a try and also have a look at the ChildLine explore section for information about bullying.Try posting a message on the ChildLine message boards to see what other young people are saying about similar problems.
You may want to have a look at a bullying support web site www.cybermentors.org.uk for more information and how to cope with bullying.
Good luck and take care
Sam