Hi Dear, I must complement for the love and care you are offering to your wife and would be mother of your child. So long as you maintain the cleanliness and hygiene in the house and she gets good amount of oxygen to breathe, the pregnancy should not have any ill effects. Also take care to protect her from any accidental injury due to the repair works. And most important, since the water damage problem repairs on, please ensure that she gets a clean filtered water to drink and is protected from the polluted water even during the bath. I hope, this takes away your stress.