I started a new job in December as a newborn nanny for a family who also has a 6 year old. I was hired to be long term but I recently found out my husband and I are expecting our first baby this fall! I had just assumed I would tell the family around 12 weeks and it wouldn't be a big deal but I have had multiple people voice concern I could easily be fired on the spot. Reasons being I was hired long term and I wouldn't be returning after the baby so they may want to just find someone sooner then later before the children get more attached. They voice how much they love me as their nanny as well as the kids and I would love to stay through summer but couldn't come back to the 70+ hour weeks post baby. Should I wait until the last minute to tell them in case they do fire me or hope they will be understanding if I offer to help find and train my replacement?