I've tried to be really diligent about not shirking any duties while I've been pregnant (which happened recently with someone else in our office). But today, I made the decision that I can do longer do the weekly filing on the 2 bottom drawers. I feel too squished. I sat on the floor to do it today, and then I had to have help getting up!
I hope people don't think badly of me at the office... 
Re: First work concession...