Kids first words.

Well my 4 month old just said daddy. And at first I thought I just heard him wrong, and then he says it again. Then I went in the bathroom to wash my hands and he screamed daddy. I'm not going to lie I'm upset. I am home with him everyday and I change diapers , play with him everything. My husband works long shifts during the week so he only sees him for a few hours. I know I know its childish but I am. So ladies what was some of your kids first words?