am I overreacting??

I'm young, I'm 16 & pregnant with my first. A boy. I'm 34+4, I'm a junior in high school. Well, I had my baby shower and got everything I needed (so blessed) but one day I came home from school and my mom had the baby's swing, bassinet, changing table and everything organized.. she even had the diaper bag packed already.. I love her help and support something I'll defiantly need but it's something I wanted me and her to do together.. I understand I can just change what she put in the diaper bag but I wanted to be the one to pack his going home outfit because the one she packed isn't the one I wanted. It just made me a little upset, am I being weird and over reacting...?