BOYFRIEND PISSING ME OFF

Alright, long story short, i’m 30+1 weeks pregnant and i’m 19 and my bf is 19 as well. We both live with our parents, ya know obviously we’re still young. I would ALWAYS be the one to stay the night at his house and he would NEVER stay the night at my house. like really now, we’re pregnant, what else could we do? He also had surprised me with a puppy about 2 months ago (i already have a 3 year old dog) don’t get me wrong i was happy but he didn’t realize how much responsibility a puppy was because he’s never had a dog but he knows i love dogs. That being said, i’ve had to take the pup everywhere i go if i were to go to a friends house or something because no one at home will watch him obviously bc he’s my dog. But my bf’s mom doesn’t like dogs so i can’t take him there so i basically can’t go over to his house and stay the night anymore. So i told him to start staying the night with me and he’s completely against it. He said it’s because he feels he’s “disrespecting” my dad and that he feels weird. Like dude what? IM ALREADY PREGNANT!! Plus my dad is a nice guy, i know he wouldn’t mind. So yeah it pisses me off and he also threatens to take the puppy away from him and give him away. How are you gonna give me a dog and take him away because you feel like it... when you can fix the issue... idk he just doesn’t listen and i needed to vent