In 'puckabrina pregnant fanfiction', a theme could revolve around the emotional journey of the characters. Puck might be dealing with his own fears and insecurities about becoming a father, while Sabrina could be worried about how motherhood will change her. There could also be themes related to the community's expectations of them as a couple having a child. Maybe in their fictional world, there are certain traditions or norms associated with pregnancy and childbirth that they have to navigate. Additionally, themes of love and support within their relationship during this time would likely be present, showing how they grow closer or face difficulties together.
Well, a common theme might be the reactions of their friends and family to the pregnancy. It could also be about how they adjust their lives and relationship to accommodate the new addition. For example, they might have to deal with changes in their living situation or their career plans. And perhaps there could be some themes related to the magical or fantastical elements of their world that interact with the pregnancy, like if there are special powers or curses that come into play.
One possible theme could be the challenges they face as a couple during the pregnancy. Another could be the anticipation and excitement of starting a family.