I was always a cat person too. It's funny how Yorkie people are often cat people. Sometimes I think my Yorkie acts more like a cat. We had a 23 lb. cat when we got our baby. Sophie was very little when we got her, about 10 wks. We were worried about how the cat would do. He was a very laid back cat, but Sophie ruled the roost for nearly 10 years. We just recently had to put our precious kitty down. He was about 18 yrs. Sophie really misses him, even thought you would never have believed she liked him. She herded him everywhere and made sure he was in his place at all times.
Enjoy your new baby. How wonderful.