Maybe in the fanfiction, Hinata's pregnancy is a result of a special mission she went on with Sasuke. During the pregnancy, she starts to have strange dreams related to the future of the child and the village. These dreams guide her actions as she prepares to become a mother, and she tries to share these insights with Sasuke without giving away too much.
Another plot could involve Hinata's pregnancy being a symbol of hope for the village. As she is pregnant, she becomes a sort of inspiration for the other villagers. She starts to hold meetings with the village women, sharing her experiences and hopes, while also dealing with her own insecurities about being a mother and Sasuke's role in their child's life, which is complicated due to his past and his own responsibilities.
One plot idea could be that Sasuke and Hinata end up in an arranged marriage for political reasons in their village. At first, they are hesitant and distant from each other. But as time passes, they start to understand and respect one another. Hinata discovers she's pregnant, which makes Sasuke realize his growing feelings for her and his newfound responsibilities as a future father. He then becomes more protective and they work together to create a stable family environment in a world full of shinobi threats.
A great plot idea could be that Hinata's pregnancy reveals some new powers or abilities within her. Maybe it has something to do with the Hyuga clan's bloodline. Naruto is both amazed and a little worried. They also have to deal with the expectations of the village. Some people expect their child to be a great ninja from the start. However, they just want their baby to be healthy and happy. Throughout the pregnancy, they learn more about each other and grow even closer as a couple.
Perhaps there could be a plot where an enemy tries to target Hinata because of her pregnancy, seeing it as a way to get to Naruto. Naruto then has to go to great lengths to protect her and their unborn child. This could lead to some intense battles and also show the deep love Naruto has for Hinata and their future family.
Another plot could be that they discover their pregnancies around the same time and decide to support each other in their respective journeys. They might share their fears and hopes, like Hinata being worried about how her child will fit into the Hyuga clan's strict hierarchy and Neji being concerned about providing a good future for his child. They could then work together to change some of the old ways in the clan for the betterment of their future children.
One idea could be exploring how Yennefer deals with the physical and emotional changes during pregnancy while still being a powerful sorceress. Maybe she has to find a way to protect her unborn child from the many enemies she has made.
One idea could be exploring how she and her partner (like Percy) adjust to the news. They might have to deal with the reactions of their friends and family. Another could be the challenges she faces during the pregnancy, like her still wanting to be involved in heroic adventures but having to be more cautious.
One idea could be exploring how Gwen's friends and family react to the news. Some might be overjoyed while others could be worried. Another plot could involve Gwen dealing with the physical and emotional changes during pregnancy while also trying to maintain her normal life, like her hobbies or job. And a third could be about the father's role, if known, and how their relationship evolves during this time.
A plot could revolve around Kushina having premonitions about the future of her unborn child during her pregnancy. She might have dreams that she tries to interpret, and this could add an element of mystery. Also, it could be interesting to see how her pregnancy affects her ninja duties, if she has to take a break or if she finds new ways to contribute while pregnant.
One idea could be exploring how Kairi's friends react to the news. For example, Sora might be initially shocked but then become extremely protective. Another plot could revolve around Kairi preparing for motherhood while still dealing with the challenges in her world. Maybe she has to find a safe place to raise her child away from the ongoing battles.
Well, a great plot could be that Natasha discovers she's pregnant right before a big mission. They then have to decide whether she'll still go on it or not. Steve is all protective and wants her to stay back, but Natasha being Natasha, she has her own ideas. And as the pregnancy progresses, they could start to have different dreams for their child's future - Steve hoping for a normal life and Natasha seeing potential for another little superhero in the making.