A theme could also be the role of the dragons during Astrid's pregnancy. Maybe Toothless becomes extra protective of Astrid, sensing the new life inside her. Or the dragons might help in some way, like flying to get special herbs that are good for Astrid's health during pregnancy.
One common theme is the relationship between Astrid and Hiccup. Their dynamic changes as they prepare for parenthood. Hiccup may become more nurturing and Astrid might show a softer side. Another theme is the anticipation of the new baby in the village. The villagers might start making preparations, like building a new crib or knitting baby clothes.
One idea could be to focus on how Astrid and Hiccup prepare for the baby. They might start building a new addition to their home on Berk. Hiccup could be super protective, while Astrid is determined to still be involved in dragon - related activities as much as she can until she can't anymore.
One common theme could be the relationship changes. For example, how her partner reacts to the news of her pregnancy. Another theme might be her own self - discovery during this new phase of life.
Another theme could be how their relationship changes during the pregnancy. Maybe they become closer as they face the challenges together, or there could be some tension due to the upcoming big change in their lives. There could also be themes related to the support they get from their friends and family during this time. For instance, their friends might throw a baby shower for them, which can be a big part of the fanfiction narrative.
Since 'lemon' fanfics are inappropriate, we can talk about common themes in regular Hiccup and Astrid fanfics. One common theme is their partnership in dragon - training and leading Berk. Another is their evolving romantic relationship, from initial attraction to deep love.
There would be a shift in their dynamic as they prepare for a family. Hiccup, who is used to being adventurous, would have to focus more on home and stability. Astrid, while still strong - willed, would become more nurturing. They would need to find a new balance in their relationship, between their old selves and their new roles as parents - to - be.
One common theme is the anticipation and excitement of becoming parents. They are often shown discussing baby names, planning for the future of their family.
One idea could be that Astrid discovers she's pregnant during a time of relative peace in Berk. She initially tries to keep it a secret from Hiccup because she's not sure how he'll react. As the story progresses, she starts to show signs and has to face the reality of sharing the news. Meanwhile, the village is preparing for a new celebration, and Astrid is worried about how the pregnancy will affect her role in it.
Astrid's character could develop in many ways. She may become more empathetic towards the other mothers in Berk. Before, she was mainly focused on her warrior duties, but now she can relate to the women who have to take care of their families. She might also learn to rely on others more, especially Hiccup, as she goes through the physical and emotional changes of pregnancy.
Some fanfictions focus on their early days of getting to know each other. For example, a story where Hiccup is trying to teach Astrid more about Toothless and she is initially hesitant but then becomes fascinated, leading to a cute and heart - warming relationship development.
In many HTTYD fanfictions where Astrid is pregnant, it often explores how she and Hiccup handle this new chapter in their lives. It could involve Hiccup being overly protective, or Astrid trying to still be as independent as she used to be while dealing with the physical changes. For example, she might continue to train dragons in a more limited way, much to Hiccup's worry.