I felt very sexy sometimes, very not-sexy other times.
Mostly, I felt like my body was the most amazing and powerful thing... heh, if your friend thinks his wife is sexy pregnant, just wait until she breast feeds!
Oh, and by the way... having babies does not mean you lose all muscle tone forever. In fact, the body is so amazing that you can be back in better shape than before if you exercise regularly. I'm not just talking about the outside...
The word is Kegels.