I have a good friend who did it through all three of her pregnancies. I wouldn't be surprised if she responds about it. I know a few others who have also ridden during their pregnancies.
If i recall correctly, back in the mid-70's a racer named Peggy Maas (onetime Nat. champ,) rode herself to the hospital to deliver. (i'm not sure i have her first name right.) That must've been one hell of a ride!
Haha, I was JUST thinking about cycling while pregnant yesterday. Granted, being pregnant is a million years away for me; I was wondering if it was safe. I dreaded the thought of having to give up cycling should I ever be pregnant. Sooo, thanks for the impeccable timing with this thread and link!