I am a CRNA, and I occasionally get assigned to orthopedics and am therefore exposed to methyl methacrylate. Do I need to request to not be assigned to those rooms? Or is rare to occasional exposure okay? Sometimes it's a few times a month, but often I can go a few months without working in a room where cement is used. I don't really want to tell my boss and co-workers right away that I'm pregnant if I don't have to do so.