Is this normal to feel this way at first?

Ariana • Hi I'm ariana! Pregnant with my first❤🍼
So I just found out the sex of my baby and..... IT'S A BOY!! I was really hoping for a girl and when they said boy I felt a little upset for a second and then I felt better once I started going shopping and stuff for him. I just feel bad that I wasn't as excited at first. Is that normal?