Hi, vigg, welcome, and congratulations!

I cannot be of much help here, because I would've told you about the same thing as your doc. I'm a midwife, and I spend most of my time begging pregnant women to stop eating donuts and drinking whole milk and soda, and to walk a little, please, just walk around the block! Sigh. So I have no experience with the very fit pregnant women. RR's suggestions are good.

An exercise physiologist, trainer, or even physical therapist who works with pregnant women might have some research/info you can bring back to your doc. She's trying to give you the best info she has.

Best wishes, and take care,

Lise