Luminosa said:
The HP is associated with the Moon, therefore, water and all the feminine functions included pregnancy. A baby or anything else under the HP`s influence is being cared and protected = fine.
Nicely said! I like that. And I'm in full agreement. The HPS is the cloistered, feminine protector of secrets and mysteries. It makes perfect sense that the message of her card, given this question, would be that the fetus if being protected in the way it ought to be, by pure, feminine guardianship.
A more masculine image would worry me because it would likely imply that the protector is having to fight to do the job. But the HPS is cool and in control. No matter how things shift, or how contradictory they become, she can maintain a balance. She never has to fight, she knows how to peacefully and perfectly protect.
There are scholars who see the HPS as signifying gestation, with the Empress as motherhood (meaning after the baby is born).