Ask Shawn: Can I keep my pregnancy secret?

The short answer: You need to tell your manager or practice owner immediately so you can avoid activities that may not be safe during pregnancy (you can find guidance here). 

Next, when you're ready you may be able to engage your coworkers and rally them to your side. For example, for activities you can't do, like lifting, you may trade filing, paperwork or phone duties. Watch Shawn's full answer here: