There could be some. You might want to check popular fanfiction websites like Archive of Our Own. Just search for 'Kol and Davina pregnant' on the site and you may find a variety of stories with different plotlines and interpretations.
Relationship development is often a theme. The pregnancy might bring them closer or cause some tensions as they adjust to the idea of becoming parents. Another theme could be the reaction of their friends and family in the fanfiction world. Some might be supportive, while others could be against it for various reasons, like fearing the power of the unborn child.
Kol Davina fanfiction often has intense emotional moments. Given their different backgrounds and the challenges they face, there are a lot of heart - wrenching and heart - warming scenes. The fanfictions also tend to expand on the lore of their world. They might introduce new types of magic or new vampire abilities related to Kol. And a lot of them play with the idea of fate, whether Kol and Davina are truly meant to be together or if they have to fight against the odds.
For Davina, she would become more cautious. As a mother - to - be, she would no longer take risks as easily. Her focus would shift from just her own powers and place in the supernatural world to protecting her unborn child. Kol, being the father, would likely become more responsible. He has a bit of a wild streak, but the pregnancy would make him think twice before getting into dangerous situations.
Kol's family, the Mikaelsons, might have a mixed reaction. Some, like Klaus, might be initially suspicious. He'd worry about how this new development could affect the family's power dynamics or draw unwanted attention. Elijah, on the other hand, would probably be more diplomatic and offer support. Rebekah might be excited at the idea of a new family member. As for Davina's side, if she has any remaining friends or connections from her old life, they might be worried about her getting involved with a vampire like Kol and the implications of having a child in such a situation.
Power and its implications is another theme. Given their supernatural natures, how they use their powers in relation to their relationship is often written about. For example, Davina's power might be a source of both attraction and danger in their relationship.
One possible plot could be that Davina and Kol discover the pregnancy unexpectedly. They might face many challenges. For example, they would have to deal with the reactions of their families and friends in the supernatural world. Some might be happy, while others could be worried about the implications of a half - witch, half - vampire baby. Also, they would need to protect the unborn child from the many threats in their world.
It's not really appropriate. Kol and Davina are characters from a story, and while fanfiction allows for creative interpretations, focusing on sexual encounters in a fan - created story can overshadow other aspects of their relationship, like their emotional bond, the development of their characters, and the overall plotlines in the original work. Moreover, it may violate the ethics and guidelines of the fan community.
The plot twist could be that Kol and Davina find out that the pregnancy is part of a prophecy. However, the prophecy has been misinterpreted by many. They initially think it's a good thing, but as they dig deeper, they realize that there are dark forces at work trying to use the baby for their own evil purposes. So they have to fight against these forces to protect their unborn child and their future together.