hi izzieamy,
im 25 and the youngest of three my brother is 3 years older and my sister is 4. Growing up with them was very hard as they see me as the spoilt baby and used to get picked on by them terably. my mum didn't know the extent of it till recent years, although i get on with them ok now it still hurts, don't stay in silence talk to your friends and parents about how you are feeling nad think of some ideas that could help the situation. I know it is very hard to tell your parents such harsh feelings but beleive me when i say dont wait till you get older letting consume you and eat away a cos your childhood will be gone and nothing will be resolved. Talk to them or ring child line there so many people out there now that can help you. Be brave and i really do it all works out. x x