My Callie is 9 months old. She has been sleeping with me since she was housebroken through the night (about 4 or 5 months old I'd say). If she does have to go during the night, which is rare, she will let me know and I will let her out to get to her puppy pads.
When we first brought her home she slept in the dining room...where there is a tiled floor and puppy pads....her bed and her other fur-buddy, Maggie!

I love cuddling up with Callie in my bed at night now. She is the perfect little snuggle~buddy!
My advice would be to keep your new baby in the crate at night until she is housebroken and doesn't run the risk of falling or jumping off of your bed. Then when your baby is older...if you want to cuddle with him/her you can with less worry~