Well, it could be that Rachel brings her organizational skills and musical knowledge to the table. Maybe she helps Puck with the baby's daily routine like setting up a schedule for feeding and sleeping. And she might also sing lullabies to the baby.
Both of them could develop better communication skills. Raising a baby means discussing important things like the baby's health, development, and future. They might learn to listen to each other more and respect each other's opinions. This could lead to a stronger friendship or even something more romantic between them as they bond over the shared experience of raising the baby.
Puck would probably start to show his softer side. Normally he's tough and a bit rough around the edges, but a baby would make him more empathetic. He'd learn to communicate better, especially with Rachel, as they navigate this new phase of their lives. Rachel would become more nurturing. She has a big heart already, but having a baby would intensify that. She would also become more assertive in making sure Puck is fully involved in the baby's life. She doesn't want to be a single mother, so she'll push Puck to step up and be a good dad. And they would both learn to sacrifice some of their own wants for the sake of their new family.
One possible plot could be that Puck and Rachel initially struggle with the news of the baby. They might face opposition from their friends and family who don't think they are ready. But as time goes on, they start to bond over the impending arrival. Puck could become more responsible, getting a steady job to support the family. Rachel would be preparing for motherhood while still chasing her dreams in the performing arts world. They could have some sweet moments where Puck sings to Rachel's baby bump and they daydream about their future as a family.
The plot could involve them dealing with financial difficulties. With a new baby, they need to find ways to make ends meet. Rachel tries to balance part - time jobs and still pursue her passion for music, and Puck might consider getting a more stable job. Their relationship could be strained at times because of the stress, but in the end, they realize that their love for each other and their baby is what matters most and they find solutions together.
The relationship might face some rough patches too. They could argue about things like where to live, how to raise the baby, etc. However, through these arguments, they learn more about each other and eventually find solutions that work for both of them, which in turn, deepens their relationship in the long run.
In the fanfiction, perhaps the wizarding world is in a state of chaos. Draco's family has been affected, and he has a child to take care of. Hermione, being the kind - hearted person she is, decides to step in. They might start off as reluctant allies, but as they spend more time together raising the child, they begin to understand each other better. Hermione could introduce the child to different cultures within the wizarding world, expanding their horizons.
One great fanfiction about Puck and Rachel being pregnant in Glee could be 'A New Beginning'. It focuses on how they deal with the unexpected pregnancy and the reactions from their friends and families. They face challenges like school and their future dreams, but also find a new level of closeness through it all.
Their relationship would become more serious. They can't just think about themselves anymore. They have to think about the baby's needs. Puck might become more protective of Rachel as she is the mother of his child, and Rachel would rely on Puck more for emotional support.
They are a popular pairing because they are so different. Puck is the bad boy and Rachel is the over - achieving diva. Their contrast makes for interesting storylines where they can learn from each other.