Help me stop feeling upset about growing up, every night I sit in my bed thinking about growing up and it makes me feel upset, it also gives me a pain in my stomach I'm only 11 years old and I used to only have one day and then a while later, but now it's every single day! I even think about it sometimes during the day, I even cry about it sometimes, and I turn 12 jn November and it makes me think my childhood is almost over, I can't take it anymore, please help?