Okay I have a question .. I have a dog and have had him for almost five years now. He never really…

Okay I have a question .. I have a dog and have had him for almost five years now. He never really wanted to cuddle with me, he would always choose my sister or my mother over me. I am 14 weeks pregnant and in the last month or so he has been more loving and cuddly towards me.. if I leave him for more than five minutes he has to come and find me and when he does he won't leave my side after that. There will even be times that I will be cuddling with my boyfriend (father of the child) and my dog will come between us and cuddle with us then .. is this normal?