A third idea is to focus on the relationship between Aquaman and his partner. How does his partner support him during this time? Do they have to adjust their relationship dynamics? It could also involve the partner taking on more of the traditional 'protector' role while Aquaman is pregnant.
A different fanfiction idea could be that Catwoman is pregnant and she teams up with other female villains who are also mothers or expecting. They form a sort of 'villain moms' group where they support each other, share their experiences, and even plot some less dangerous schemes together while taking care of their pregnancies.
One idea could be a story where Marinette discovers she's pregnant unexpectedly. It could focus on her initial shock and how she decides to tell Adrien. Maybe she's worried about his reaction and how it will affect their relationship and their superhero lives.
A possible fanfiction could be that Wonder Woman is pregnant as a result of a prophecy. The Amazons see it as a sign of great change. She has to deal with the political implications within the Amazonian society as some are worried about the future of their traditions. Meanwhile, she is also facing external threats who see her pregnancy as a weakness to be exploited.
Another possibility is a fanfiction set in an alternate universe where Raven and Damian are already married and they've been trying to have a baby for a while. When Raven finally gets pregnant, it's a time of great joy. They could go through all the typical pregnancy experiences like shopping for baby clothes, choosing a name, and decorating the nursery.
Another fanfiction could explore the reactions of their friends to the news. Inuyasha might be initially gruff about it but secretly happy for them. Kagome could be super excited and offer to help Sango with any pregnancy - related problems, like morning sickness remedies or advice on baby clothes.
A possible plot in such a fanfiction could involve Draco seeking help from unlikely sources. Maybe he goes to Hermione Granger for advice, since she's known for her intelligence and knowledge. This could lead to an interesting dynamic between the two former rivals. The story could also explore how Draco deals with the practicalities of pregnancy, such as dealing with morning sickness while still trying to maintain his status in the wizarding community.
In a fanfiction, Bellatrix's pregnancy could lead to a change of heart. She might start to question the Dark Lord's ways when she thinks about the future of her unborn child. For example, she could consider leaving the Death Eaters to protect her baby. This would create a lot of internal conflict for her, as she has been so loyal to Voldemort for so long.
A third possibility is that the pregnancy has some sort of magical or unexpected origin. Maybe it was a result of a unique event, like a comet passing overhead that had some sort of strange effect on them. This leads to the pregnancy, and as it progresses, Esme starts to develop new powers or abilities. Carlisle is both fascinated and concerned, and they both have to figure out how to handle these new developments while also ensuring the safety of their unborn child.
In a fanfiction like this, perhaps it could explore the relationship between Omamori Himari and the father of the baby. If it's someone she already has a relationship with, their bond could strengthen or face new strains. Maybe they'll have to make difficult decisions together regarding the pregnancy, like where to live or how to support the family financially.
A possible fanfiction could start with Shirayuki realizing she's pregnant. She tells Zen, and he's initially speechless but then filled with happiness. As the pregnancy progresses, they could start preparing the nursery together. Zen might use his resources to get the best things for the baby. And when the baby is finally born, it could be a beautiful moment of new beginnings for them.