One common theme is betrayal. Regina might betray Emma's trust in some way, which causes the hurt. For instance, she could break a promise she made to Emma.
Often, in 'emma regina pregnant fanfiction', there is the theme of anticipation and preparation. They might be getting ready for the new baby, like decorating a nursery or choosing names. There could also be a theme related to the reactions of their friends and family in the story. Some might be excited, while others could be worried or skeptical. And of course, there's always the overarching theme of love and how it evolves as they are about to become parents.
Another theme is the reactions of the people around them. Their friends, family, and the community in the story might have different responses to the pregnancy, which can add drama and interesting plotlines. For example, some might be supportive, while others might be against it due to various reasons like past grudges or social norms in the fictional world. Also, the challenges of the pregnancy itself, such as health concerns, can be a theme. They have to face these together, which further deepens their bond.
Another theme is the idea of them being in a romantic relationship. This is quite common as many fans ship them together. These fics usually focus on the build - up of their romantic feelings, the challenges they face in a relationship, and how they support each other.
One common theme is redemption. Since both Regina and Emma have complex pasts, many fanfics explore how they find redemption through their relationship with each other. For example, Regina's past actions as the Evil Queen can be atoned for with Emma's help and vice versa.
Love and attraction is another prevalent theme. Despite their differences and the 'wicked game' they seem to be part of, there's often an underlying current of love or at least strong attraction between them. It creates a complex and interesting dynamic in the stories.
Some fanfiction might involve Regina making a mistake that ends up hurting Emma emotionally. For example, Regina might accidentally use her magic in a way that affects Emma negatively. These stories often delve into the complex relationship between them and how they work through the hurt.
I'm sorry, I'm not that familiar with specific 'emma regina pregnant fanfiction' works. You could try searching on fanfiction websites like Archive of Our Own. They have a vast collection of fanfictions and you might be able to find some related to this topic there.
I'm not sure which specific Regina Emma pregnant fanfic is the best as it depends on personal taste. However, some fanfics might focus on how they deal with the pregnancy, their relationship development during this special time, and how their friends and family react. You could also try looking on fanfic forums where fans might recommend their favorite ones.
Regina often develops from a more guarded and controlling character to a more nurturing one. As she raises Emma, she starts to let down her walls. For instance, she may begin to show more vulnerability around Emma, sharing her own past traumas.