There are. One common theme in these fanfics is that Draco realizes the importance of Hermione and her unborn child. He might protect her from other dark forces or from the judgment of the wizarding world. It's really interesting to see how the relationship between Draco and Hermione develops in these stories, especially in the context of her pregnancy.
One plotline could be that Hermione is in danger from some dark wizard group because of her status or knowledge, and Draco, having some inside information, decides to protect her. Another is that they are forced into a situation where they have to rely on each other, like being trapped in a certain place, and Draco takes on the role of protecting Hermione and her unborn child.
Love and friendship also play a big role. Sometimes, the protection leads to a deeper emotional bond, whether it be a budding friendship or a romantic relationship. It's about two characters who were initially on opposite sides finding common ground through the act of protection.
One possible reason could be that Draco has had a change of heart. Maybe he realizes that Hermione is a person worthy of protection regardless of her House or her friendship with Ron. He might have seen some injustice about to befall her from Ron and his Gryffindor bravado getting out of hand.
Well, in some fanfics, the plot might revolve around Hermione's pregnancy being a result of some magical accident or a prophecy. This could lead to them having to figure out how to deal with the implications. Some stories may focus on how their relationship changes. Draco might become more protective of Hermione and start to see the wizarding world from her perspective. It could also involve them having to hide the pregnancy from certain people in the beginning, like the Malfoy family who might not approve.
One popular 'Draco and Hermione pregnant' fanfic is 'Unexpected Bond'. It explores how their relationship develops after Hermione discovers she's pregnant. The story delves into the challenges they face in a world where their union is unexpected. Another is 'A New Beginning' which focuses on how they prepare for the baby's arrival, dealing with family reactions and their own insecurities. There's also 'Pregnancy of Change' that shows their growth as individuals and as a couple during this life - changing event.
There's also 'Shielded by a Slytherin' which delves deep into their relationship. In this fanfic, Draco's protective nature towards Hermione stems from a series of events that make him see her in a new light. It shows how their characters grow and develop through the protection aspect. It has great character development and a really engaging storyline that keeps readers hooked.
In the wizarding community at large, he could become an outcast. Other wizards and witches would likely look down on him, and he might find it difficult to get support or make alliances in the future. His actions could also lead to him being targeted by those who support Hermione and want justice for her.
Well, it definitely makes things more complicated. Ron would probably be very confused and angry at first. He might see Draco's actions as a form of interference or even an insult. He may think Draco has some ulterior motives towards Hermione.
In fanfic, the idea of Draco and Hermione being pregnant could stem from the exploration of redemption arcs. Draco, who was initially a bully and on the wrong side, might be going through a process of change. Hermione, with her kind heart, could be the one to see this change in him. Their relationship might develop slowly as they start to understand each other better. As they grow closer, the pregnancy could be a way to show the extreme consequences of their relationship in the fanfic world, as well as a symbol of a new beginning that combines the two formerly opposed sides.