To add a realistic portion of advice from someone in the know. We have 2 pugs, both under 3 years and a 2 month old son. I would never, ever get rid of my dogs, they are part of my family...but have I thought about it at my darkest moments? yes. 
It it without doubt THE hardest thing for me - having dogs that need attention, training, company, walks when you are alresdy giving everything you have to your baby. Forget the sleepless nights, breast feeding etc! Maybe yr DH will do the large portion of the work. Mine said he would but realistically, I do nearly everything. I feel guilty a lot of the time either as my dogs need walking but I'm feeding baby or vice versa because my baby wil be sick if I put him down but I have to, to let dogs out.
Frenchies are v like pugs in that they need company and thrive on being with u, all the time. But they also need training and can be v v stubborn and a pain with toilet training. I have 2 dogs which obviously is harder work but still...phew. that said I love the interaction and my oldest pug just lives the new baby (and wants to lick his ears!)
Please re think if u want to give your baby and future puppy the best deal. Think how hard it could be walking a dog and newborn in the bleak months of Nov - march (or May as it was this spring!!). If u want any specific advice on logistics of it all let me know as it'd hard factoring in things like month pregnancy fat ankles and dog walks, and going to baby classes around giving dogs company / time etc.
Right, baby is asleep but unfort I have to get up and wake him so I can walk dogs, then take baby to docs as he's poorly. I feel like actual superwoman sometimes!! 