Tired of Being the Middle Child

I’m the middle kid in my family and it feels like I always get the short end of the stick. My parents were obsessed with my older sister’s achievements when she was young, but by the time they got to me, they seemed more tired and less interested. Now my little brother is around, and suddenly all the attention has shifted his way. So one day, I just had it, and I snuck into their room when they were out and took all my sister’s medals and trophies and hid them in my closet. It felt good at first, but now I feel a bit guilty. Am I overreacting or is it normal to feel like this sometimes?