There might be a fanfiction where Arya teaches Eragon some ancient elven lore. This could lead to a stronger bond between them and new adventures as Eragon uses this knowledge. It could also involve them facing off against an unknown enemy that is threatened by Eragon's new - found knowledge.
A really cool fanfiction could be set in an alternate universe where Arya and Eragon are from different kingdoms that are at war. They meet by chance and initially are enemies but then gradually realize they have more in common and must work together to stop a greater evil that is using the war for its own purposes.
One interesting aspect is the exploration of their different cultures. Eragon is from a human background, while Arya is an elf. In fanfiction, their love can bridge the gap between these two distinct cultures, leading to unique storylines about how they combine their traditions and values.
I'm not sure about a specific title, but generally, in such fanfictions, they might explore how Eragon and Arya's different cultures and upbringings affect their relationship. For example, Arya being an elf and Eragon a human. Some fanfictions could focus on how they overcome the prejudices within their respective societies to be together.
One challenge could be financial in the context of their world. They need to ensure they have enough resources to take care of the baby. This could involve finding a suitable place to live, getting proper food and clothing, and having the necessary magical or non - magical items for the child's upbringing. It's not easy when they also have to deal with their own responsibilities in the world of magic and adventure.
A great theme could be their adventures together in a new land. They could face new challenges, discover ancient magic, and grow as individuals and friends while on this journey.
One common theme is the struggle for power. Since they are in a world full of magic and different factions vying for control, fanfictions often play with this idea in relation to Eragon and Arya. Also, the theme of friendship is prevalent. They are comrades in a way, and fanfictions develop this aspect further. For example, in some fanfictions, their friendship is what saves them from a great danger.
I'm not sure if there's a specific fanfiction where Arya is pregnant. Fanfiction is a vast world with different interpretations. Some fanfic authors might be interested in exploring this kind of relationship development and the implications of Arya being pregnant, but it might also deviate from the original tone and themes of the 'Eragon' series. You could start by looking at fanfiction archives dedicated to 'Eragon' and use relevant search terms.
You could explore fanfiction that focuses on their adventures together. For example, how they might team up to face a new and powerful enemy in the land of Alagaƫsia. This would stay true to the action - adventure genre of the original 'Eragon' story.
In certain 'Arya x Eragon fanfic', the authors might write about their relationship in a more romantic light. They could have secret moments together, share their dreams and fears, and gradually fall in love while still dealing with the political and magical aspects of their world.
There's this fanfic called 'Eragon and Arya: The Unseen Path'. It takes the relationship of Eragon and Arya in a different direction. It delves deep into their emotions and how they might deal with various challenges together. It's quite long but definitely worth the read as it has a very detailed plot that unfolds gradually.
It might be full of drama. There could be concerns about the baby's future, like what kind of powers it would inherit. Also, it would likely change the dynamic between Eragon and Arya. They would have to deal with the responsibilities of parenthood. Maybe Eragon would become over - protective, and Arya would struggle between her duties and being a mother.