One possible storyline could be about the challenges she faces during pregnancy, like dealing with morning sickness and hormonal changes. Another could be how her friends and family support her throughout the pregnancy journey. And perhaps there could be a storyline about her preparing for the new arrival, such as setting up the nursery.
One possible storyline could be that Ash and Serena have been traveling together for a long time and their relationship deepens. They might face some initial shock and then start to plan for their future together. They could have to deal with reactions from their friends and family, like Pikachu being both excited and a bit confused.
Well, perhaps in the fanfic, the pregnancy could be a catalyst for Inuyasha and Kagome to bring their two worlds closer. They could start to work on making a place where their child can grow up safely, which means mending relations between demons and humans in their area. And of course, there would be the whole aspect of Kagome's pregnancy journey, like her changing emotions and physical needs.
Perhaps in the fanfic, Ron is away on some important mission when Ginny discovers she's pregnant. When he returns, he has to quickly adapt to the situation. They then decide to keep the pregnancy a secret for a while to avoid unwanted attention and drama within the wizarding community.
One possible storyline could be that Harry is cursed by a dark wizard. The curse has the unexpected side - effect of making him pregnant. He then has to search for a way to break the curse while dealing with the physical and emotional turmoil of pregnancy. Another could be that it's a result of some experimental magic gone wrong. He might have been trying to help someone with a fertility spell and it backfired on him.
It could be her long - time love interest. In many fanfics, the most obvious choice would be the character she has the strongest romantic connection with in the original series.
One possible storyline could be that they are in a committed relationship and the pregnancy is unexpected but they decide to face it together. They might struggle with how it will affect their hero careers and deal with the reactions of their friends and families.
One possible storyline could be that Sirius initially panics when he finds out about the pregnancy. He might struggle with his responsibilities as he has a rather wild and carefree nature in the original story context. He could then gradually grow into the role of a father - to - be, facing challenges from his friends and family who may have different expectations.
One possible storyline could be that they face a lot of family drama. Their families might be shocked and have different reactions, some may be supportive while others are against it. It could also explore how Ben and Gwen deal with the sudden responsibility and how it changes their relationship from just being cousins to co - parents.
In this fanfiction, it could be that Sasuke returns to the village and he and Sakura start to build a life together. Their friends are happy for them, and then Sakura becomes pregnant. The story might explore how the news affects their friends and family, and also how Sasuke and Sakura grow as a couple during this time.
One possible storyline could be about Gwen facing the challenges of being a superhero while pregnant. She might have to deal with villains who try to take advantage of her condition. Another could be her preparing for the arrival of the baby, like setting up a nursery with her friends and family's help. And also, there could be a story where she discovers new powers related to her pregnancy that help her protect herself and the unborn child.