It has been mentioned in passing before. That Queen Ingrid had to leave her bed during some of the dramatic events during the German Occupation of Denmark.
But the new DR Series is the first to make an expicit mention of the fact that she spend most of the time during her pregnancies confined to her bed in order not to loose the child.
And after the birth of Anne-Marie she was told not to have any more children. Which is one of the factors leading to the change of the succession law.