Hi,
In March I was pregnant and my husband and brother in law painted the nursery and guest rooms. We used the low VOC (or was it no VOC?) paint from Sherwin Williams. It was a little more expensive than regular paint, but not nearly as much as the equivalent from Benjamin Moore. I believe that you can get it made in any of their colors. My brother in law has worked as a professional painter and he was very happy with the quality of the paint. I plan to use it or something like it any time we paint now.
There are healthier non-toxic options like milk paints, but from what I could find most of them you had to order online and I wanted to be able to buy it at the store and get more if need be.
We kept the doors to those bedrooms closed and had fans in the windows blowing the air out.
I agree with the person who said that she is more concerned about your unborn baby than your 14 month old. Would it be at all possible for the both of you to stay someplace else for a night or two? I would try to arrange it so the rooms were completely ready to paint (taped, walls washed, furniture in the middle of the room and covered) and then have your husband and a friend or two start painting early in the day so you can get it finished in one day or maybe two. That would mean finding another place for your daughter to sleep while you got it ready.
Doing it now (on a dry day) means that you can have the windows open and you can air out the house.
I would definitely not have you or your daughter sleep in the room the night it was painted.
Good luck and congratulations on your upcoming baby!
D.