One common theme could be relationships. In 'The 100', the characters have complex relationships, and in fanfiction about pregnancy, it might explore how these relationships change or are affected by the pregnancy. Another could be survival. Since the show is set in a post - apocalyptic world, the pregnancy might add another layer of difficulty to the already challenging task of survival.
Love and relationship development are often common themes. Since Graylu is a ship, the story might focus on how their relationship grows stronger during the pregnancy period.
Often, there are themes related to the characters' insecurities. For example, one of them might be worried about being a good parent. There could also be themes of sacrifice, where they have to give up certain things for the sake of the pregnancy and the future of their family. And of course, the theme of the growing bond between the two main characters as they experience this life - changing event together is quite common in these types of fanfictions.
Another common theme could be self - discovery. For both Jane and Billy, the impending parenthood might make them look at themselves in a new light. They may discover new strengths or weaknesses. Struggles with responsibility are also often seen. With a baby on the way, they have to deal with financial, emotional, and practical responsibilities, which can be a major part of the fanfiction's plot. For example, Billy might have to take on a new job to support the family, or Jane might struggle with balancing her career dreams and motherhood.
Survival is often a theme. With the war going on and a pregnancy involved, the characters have to find ways to survive. This could include finding safe places, getting enough resources for the pregnant character, etc. Also, sacrifice might be a part of it. Characters might sacrifice their own comfort or safety for the sake of the pregnant one or for the greater good in the context of the war.
Often, there's a theme of secrecy. Since their relationship might be unexpected to the wizarding world, they may have to keep the pregnancy a secret at first. Also, there can be a theme of friendship betrayal. Some of their friends might not be happy about their relationship and the pregnancy, which can lead to tension. And of course, there's the theme of preparing for the future, like how they will raise the child in a world that has its own prejudices and challenges.
Another theme could be the future planning for the baby. This includes things like where they will live, how they will support the family financially, and what kind of life they want to provide for their child. It shows a more practical side of their relationship and how they adapt to the upcoming changes. For example, they may consider moving to a bigger place or changing their jobs to better accommodate the new family member.
One more theme could be career challenges. If the pregnant character in the 'new girl' fanfic has a career, the pregnancy might disrupt it. So, it could be about how she balances her pregnancy with her work life, whether she decides to take a break, or tries to continue working despite the difficulties. It adds an extra layer of drama and realism to the story.
Love is often a common theme. The relationship between Tom Hiddleston's character and the OC usually involves a deepening love as they deal with the pregnancy. Another theme could be family support, showing how the characters around them react and help during this time.
Well, in this type of fanfiction, a common theme could be the exploration of emotions. There would be a whole range of emotions for both Bill and Dipper to deal with. Fear, excitement, confusion, etc. Another theme could be the alteration of their future plans. Their lives are taking a different turn because of the pregnancy, so how they adjust their goals and dreams could be a theme. And sometimes, there could be a theme of secrecy or revelation, like whether they keep it a secret or tell others, and the consequences of either choice.
Love and relationship building. It often focuses on how the two women in the relationship support each other, deal with family and society's reactions, and grow closer through the experience.