GeeBeeRN - congratulations! You must be so excited! Carrying a little one was one of the most wonderful feelings for me ... I loved all the waiting and expectation, wondering what kind of person the babe will be, who they will look like ... it's a great time in your life.
I'm really glad to hear you have good teamwork on your floor. I know on my unit, the pregnant nurses had some issues with people that weren't quite so supportive.
I would go out of my way to make sure they weren't taking on too much physical work (i.e. heavy lifting, or putting themselves in a dangerous situation w/ combative pts). I agree with the PPs who encouraged you to listen to your body. Sleep is double important now, eh?
Make sure you give yourself enough time to sleep, especially if you're working nights - none of that "I'll get up a little early and run errands before work" nonsense! SLEEP, WOMAN!
And snacks ... take lots of healthy snacks to work with you so you can eat on the run.