I'm a self-employed professional. I work directly with clients and not in a corporate environment, but I represent clients and work with corporate lawyers and professionals in high end firms, and have ongoing relationships with these contacts.
I am early pregnancy and feeling somewhat self-conscious of my pregnancy to these corporate contacts in that 1. I am probably not working at my maximum ability right now 2. it's a pregnancy number I dare not mention on MN (it's number 5).
YANBU - yes, they will think you can't manage it all and not capable of handling the work properly. And probably you're a little strange for having so many kids.
YABU - nobody cares. Get on with the work and get on with your life. As long as you deliver they will think good for you, keep going.