There is no reason to be worried about this. We all have to go through puberty and only when it has eased its vile stranglehold on your sanity and emotional well being, will you realise that it is only part of growing up. Most people practice self abuse at some time in their life. Even the clever girls at school that play the flute and always do their homework are tend to touch themselves "down there". Please don't think that climbing on a roof and shouting about it will help the situation. I know, I tried it.