The relationship would likely become more intense. They would have to rely on each other more, and their bond would deepen as they are about to become parents. Inuyasha would probably become more protective of Kagome.
He might also become more patient. Usually a bit hot - headed, but with Kagome pregnant, he'd have to learn to be more calm and understanding. For example, when Kagome has mood swings due to hormonal changes, Inuyasha would have to control his temper and be more supportive instead of getting frustrated.
Yes, there are likely fanfics on this topic. Fanfiction often explores various 'what - if' scenarios in different fictional universes, and the idea of Kagome and Inuyasha having a baby is a popular one among fans to expand on their relationship in new and creative ways.
One possible plotline could be Kagome and Inuyasha preparing for the arrival of their baby. They might face challenges like finding a safe place to live in the feudal era. Inuyasha would be extra protective, using his demon strength to keep Kagome and the unborn child safe from any threats, be it other demons or the perils of the wild.
Some fanfics might focus on Kagome's pregnancy journey. She could have difficulties due to the unique circumstances. Maybe her powers are affected during the pregnancy, or she has to deal with cravings that are a result of the combination of her human and the spiritual energy in her. Inuyasha, on the other hand, may struggle with how to protect her and the unborn child from his enemies who might see this as an opportunity to harm him.
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.
There could be a fanfic that delves into their backstories more. For instance, exploring Sango's past as a demon slayer in greater detail. How she overcame her family's tragedies and how that has shaped her. Inuyasha and Kagome could be part of this exploration, learning more about Sango and in turn, Sango learning more about their own complex pasts and how they are dealing with it.
Yes, there might be such fanfiction in some fan communities. However, this often goes beyond the original storyline of the 'Inuyasha' series. Fanfiction can explore various 'what - if' scenarios, but it's important to note that not all fans may be comfortable with this particular plot direction.
Inuyasha would likely become more protective. He's always been protective of Kagome, but with her pregnant, it would be on a whole new level. He might not let her go on dangerous missions as easily. Kagome, on the other hand, would probably get frustrated with his over - protectiveness at times, but also appreciate his concern deep down.
Another theme is self - discovery. Kagome is often in a process of learning more about herself, her powers, and her place in the world. Inuyasha too has to come to terms with his dual nature. Fanfics expand on these aspects, showing how they grow as individuals while also being part of a couple.