Working as a renovation project manager

Hi, mummies and mum-to-be I work as a office renovation project manager. It is very often and inevitable for me to watch the workers doing painting, tearing wall, plastering, gluing, hammering works and etc as I have to ensure the project goes well. I understand that pregnant mummies should try to avoid all these and might suggest to ask for a job transfer - but looking at my company and I need the job, it would be difficult to ask for an immediate transfer. Can any one advise if you had similar experience or is this just superstition? Thanks!