That's really a tough one...Not only could a dog add stress to you and your husband, but the dog could really get stressed out. Yorkies are so delicate as puppies many times and they can get stressed very easily causing them to get very sick. I wish I had better advice for you. I just know that when I got my yorkie, he was very sick and taking care of him was very stressful. We were syringe feeding him every 2 hrs and getting him to drink water through a syringe. He had to take his meds...Potty training and all that too. I would just hate for this to happen and you and your hubby being in the middle of a stressful situation already.
Then again, your hubby might just fall in love with the puppy
My hubby didn't really want a small dog when I started looking for a yorkie, but once I started showing him pictures and everything, he was hooked! And when we got him, well his heart totally melted for our furbaby
I'm so sorry that you're in this situation. I can imagine how excited you are about your puppy! I really wish I had better advice.