Hi Furkids. I was in my first trimester when they painted the school! I was about 7 weeks I think, and I couldn't get away from the stink. Apart from it making me feel like puking because of the morning sickness anyway, there were no bad effects and DD is fine. You don't get implantation until a week after O anyway, so no mixing of blood/diffusion of chemicals until then. I'd say go paint if you want to.