The whole group dynamic would change. Instead of just focusing on their scientific interests and social outings, they would now also be involved in Penny's pregnancy journey. There would be baby showers to plan, nursery - setting - up sessions, and lots of discussions about parenting. The guys might even start to compete over who will be the 'coolest' uncle to Penny and Leonard's baby, which would add a new layer of humor to their relationships.
Leonard would likely become even more protective of Penny. Their relationship would deepen as they face the new challenges of impending parenthood together. He might start to take on more domestic responsibilities, like making sure Penny has a healthy diet during her pregnancy.
Sheldon would probably have a hard time adjusting at first. He's used to a certain routine, and a pregnant Penny could disrupt that. But eventually, he might grow to be excited about having a baby around, especially if he sees it as an opportunity to teach the baby all the things he knows. His relationship with Penny would shift from just being neighbors to being more like family. Howard and Bernadette would be excited for Penny and Leonard. They could offer their own parenting advice based on their experiences, and this would strengthen their friendship with the couple.
There might be a fanfiction where Penny is pregnant and she starts to feel really isolated because she's the only one in the group going through this. She misses her old life a bit, and the story could be about how she overcomes these feelings with the support of her friends and Leonard. It's very emotional as it deals with her internal struggles.
Another plot could be Penny dealing with the challenges of her acting career while pregnant. Maybe she gets offered a role that she really wants but is worried about how her pregnancy will affect it. This could lead to some interesting drama as she tries to balance her dreams and her new family situation.
She might become more responsible. Penny has always been a bit carefree, but pregnancy could force her to think about the future more. For example, she may start to save money or look for more stable acting jobs.
As far as I can remember, there is no such Penny wedgie incident in The Big Bang Theory. The series was filled with different kinds of comical situations. For example, there were Sheldon's idiosyncrasies, Howard's attempts to pick up women, and Raj's selective mutism. But a wedgie incident for Penny just doesn't seem to be part of the storylines.
There are many possible fanfictions on this topic. One could imagine that in the fanfiction, Penny's pregnancy might bring a new dynamic to her relationship with Leonard. For example, they could become more protective of each other and start planning for their future as parents more seriously. It might also affect their friendships with Sheldon and the others. Sheldon, who is not always good with changes, might initially struggle to adapt to Penny being pregnant and the new baby in their lives.
There could be a fanfiction where Penny's pregnancy makes Leonard super nervous. He starts freaking out about being a dad and all the responsibilities. Meanwhile, the rest of the gang tries to support them in their own clumsy ways. It's interesting to see how the characters' relationships develop during this big life change.
Howard and Bernadette would have a more experienced perspective. Bernadette would share her own pregnancy stories with Amy, both the good and the bad. Howard would probably make some corny jokes about the situation, but deep down be really happy for his friends. All the characters would come together to form a sort of support system for Amy and Sheldon during this big life change.
One common theme is the growth of their relationship. Their friendship or potential romantic relationship evolving over time, with Penny helping Sheldon become more social and Sheldon introducing Penny to new intellectual concepts.
One possible fanfic could be about how Bernadette's pregnancy affects her relationship with Howard. For example, Howard might become overly protective, leading to some comical misunderstandings. They could also have different ideas about how to prepare for the baby, like Howard wanting a high - tech nursery while Bernadette is more practical.
It represents diversity through the friendship of the characters from different backgrounds. For instance, the group has different ethnicities, personalities, and interests. In terms of relationships, it shows different types of male - female relationships, and also has some nods to non - traditional relationships through its inclusive environment.