Well, it's possible that such a fanfiction exists. Elsa and Jack Frost are from different fictional universes (Elsa from Frozen and Jack Frost from Rise of the Guardians), but in the world of fanfiction, people often cross over characters and create all kinds of scenarios. However, I haven't personally come across a 'pregnant' fanfiction involving them. You might have to search on some dedicated fanfiction websites to find out for sure.
Yes, there are some fanfictions with this theme. You can find them on various fanfiction websites like Archive of Our Own (AO3). However, this is a very creative and often out - of - canon concept that fans have come up with.
One possible way their love story could be in fanfiction is that they meet by chance. Maybe Elsa is exploring the frozen forest and Jack Frost, with his mischievous nature, decides to play a little trick on her. But instead of getting angry, Elsa is intrigued by his carefree spirit. They start to communicate more, sharing their experiences of being in control of ice and snow. As time passes, they realize they have a deep connection, and their love begins to grow.
Well, often there's the theme of love and family. Since Elsa is pregnant, there's a focus on how she and Jack Frost will create a family together. There may also be themes related to acceptance, both in terms of their relationship and the new life they're bringing into the world. Additionally, some fanfictions might explore the magical aspects, like how the baby might inherit their powers.
If we're talking about a fanfiction where Elsa and Jack Frost have a baby, there are so many storylines that could develop. The baby could be a key to uniting different magical realms that are related to winter. It might face challenges growing up, such as being accepted in both Elsa's world and the world where Jack Frost belongs. The baby's powers could also be a source of both wonder and danger. For example, if it couldn't control its powers properly at first, it could accidentally cause blizzards or freeze things in inappropriate places. But with the love and guidance of its parents, it could learn to use its powers for good and become a beloved figure in the winter - themed magical world.
One interesting Jack Frost and Elsa fanfiction could be about them teaming up to save their respective frozen worlds from a common threat. They both have powers over ice, so it would be a great adventure with them combining their skills.
In a 'Elsa and Jack Frost pregnant' fanfiction, it could start with a rather unexpected encounter between them. Perhaps they meet during a strange winter phenomenon that blurs the boundaries between their worlds. As the story progresses, their relationship develops, and the pregnancy occurs. The fanfiction could then delve into the physical and emotional changes Elsa experiences. Jack Frost, being a more carefree spirit initially, might struggle with the responsibilities of being a father - to - be. It could also show how the two of them create a new home or space for their growing family, all while facing potential threats from those who might not approve of their union or the power that their unborn child may possess.
One popular story might be about Jack Frost and Elsa teaming up to save their respective worlds from a common threat. They could use their unique powers in combination, like Jack's ice - making abilities and Elsa's ice control.
Some Tumblr blogs are dedicated to sharing and discussing fanfiction. You could search for relevant tags like 'Jack Frost Elsa fanfiction' on Tumblr. There might be links to stories or even some original fanfiction created by Tumblr users.
You can try Archive of Our Own (AO3). It has a large collection of fanfiction, and there are likely many Jack Frost and Elsa stories there. Just use the search function to look for them specifically.