Dogs and New Babies

So we have a 2 year old bishon/poodle mix that we LOVE! He's clearly my dog and has attached himself even more to me since becoming pregnant. He's pretty well behaved provided that he gets out on a walk or to the dog park. I'm just curious from other mommies out there what you did to introduce baby to puppy and if you would recommend renforcing good behaviors with a professional trainer? I want my pup to remain happy and healthy as our family grows and not turn into a resentful trouble maker (I've seen it happen).