So I live with my boyfriend and we have a dog, we've had her since she was about 3 weeks old. She's…

So I live with my boyfriend and we have a dog, we've had her since she was about 3 weeks old. She's like our first child, she's super sweet and playful. But she is protective of my boyfriend and I which I'm happy she is. But now since we are expecting, I'm a little worried on how she will react with us giving the baby a little more attention. Have any of you had to introduce your baby to your dog? How was it?