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.
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.
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 common theme is the anticipation and excitement of becoming parents. They are often shown discussing baby names, planning for the future of their family.
The theme of support from the community around them is also quite common. In many fanfictions, the other Glee characters come together to support Sam and Mercedes during the pregnancy. This could include things like throwing baby showers, helping with doctor's appointments, or just being there emotionally for the couple. It shows the importance of a strong support network in such a life - changing situation.
One common theme is the anticipation and excitement of starting a family. It could explore how Sam and Freddie deal with the news of the pregnancy, like their initial reactions.
There could also be themes related to their relationship growth during this time. The pregnancy can bring them closer together as they navigate this new chapter in their lives. Maybe they have deep conversations about their future as parents, or they support each other through the hormonal changes and insecurities that can come with pregnancy.
One common theme is the challenges they face as a couple with a pregnancy. It could be about how they deal with the military regulations in the Stargate universe while expecting a child.
In 'Sam and Austin pregnant fanfiction', a prevalent theme could be the anticipation and anxiety that comes with pregnancy. Sam and Austin might worry about the health of the baby, whether they'll be good parents, and how their lives will change. There could also be a theme related to their careers. Maybe they have to make adjustments to their work schedules or deal with the reactions of their colleagues. Another aspect could be the exploration of their own pasts and how that impacts their view of the future with a baby, like if they had difficult childhoods and are determined to do things differently for their own child.
One common theme is the struggle for acceptance. Sam might struggle to accept the situation himself, and his friends may have a hard time accepting it too. Another theme could be protection. Sam would likely feel the need to protect Ruby and the unborn child in a world full of danger. And there's also the theme of change, as this situation would drastically change the lives of both Sam and Ruby.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a wide range of fanfictions, and you might be able to find ones related to Astrid and Sam being pregnant there.