There are paints that are perfectly safe for you and your baby, have a zero VOC and are non-carcinogenic. Here's an article that might help as you're doing your nursery. Have fun with it! http://www.saigenicoles.com/blog/baby-room-design-101-5-design-tips-for-creating-the-nursery-room-of-your-dreams.html
I've worked with spray paints my entire pregnancy, just don't breath in the fumes and you should be fine