Basically what sunseal said.
I choose not to use chemicals like that on myself. THEre are safer nail polishes out there now but I won't take the risk of possibly altering brain chemistry by using nail polish when I don't need it.
I would love to paint my nails though now that it's summer.
For the record I also will not eat foods with nitrates in them, would not dye my hair (I don't anyway), will not use deodorant with aluminum, eat deli meats, use my acne face wash (salicylic acid not recommended), eat raw sushi, use plastic containers (if I can help it. ). So basically I'm pretty strict while pregnant but for me a healthy baby is worth it.