That was a truly incredible sentence and kudos for you for making all of us reading it with our own two eyes.
But we are also worried about the health and safety of these ladies. Childbirth is a risky business and even more back in the Ye Olde Days, even for royal woman. And yes, while Anne of Brittany and Eleanor of Castile had around 14 children each, it certainly took its toll on then. And many other women suffered from ill health due to many pregnancies and childbirth in rapid succession.
So when we say, geez, let them rest for a while, we mean that they can have happy times with their hubbys without a baby knocking on the door immediately.