I just received a whitening kit for my teeth in the mail a few days ago! I hadn't heard anything about not teeth whitening while pregnant but I wanted to see if anyone else here had. They are professional strength Crest Whitestrips.
Of course, swallowing any of it is bound to make my stomach hurt more, but if I can get past that maybe it will make my growing self feel pretty!
Re: WWYD: Whitening kit
FWIW, the Crest FAQ pages says there's no evidence that they're bad for pregnant women, but that you should ask your doc.
I know I read it somewhere.
Call your doctor or ob nurse for questions like this. I've been surprised and how inaccurate some internet resources can be.