Peeta would probably be very nurturing. He has a kind heart, so he'd be great at taking care of the baby's basic needs like feeding and changing diapers. Katniss, on the other hand, might be a bit more cautious. She's used to being in survival mode, so she'd be constantly on the lookout for any potential threats to the baby.
Well, in such fanfictions, the pregnancy can be a symbol of hope. After all the trauma they've been through in the Hunger Games, having a baby is like a new start. It might also lead to some interesting character developments. For example, Peeta's protective nature could become even more pronounced, and Katniss might struggle with her role as a soon - to - be mother while still being the strong Mockingjay.
In this fanfiction, their pregnancy could be a source of great stress as well. Given their past traumas and the dangerous world they live in, they would be constantly worried about protecting their unborn child. For example, they might fear that the Capitol could use their baby as a pawn in their power games. So they would have to take extra precautions to keep their pregnancy a secret for as long as possible.
They would become more united as they have a new life to protect. Their focus would shift from just each other to their baby, and they would work together even more closely.
They might have some disagreements, like how to raise the child. Katniss, who has grown up in a tough environment, might have different ideas compared to Peeta. But these differences would also help them understand each other better. They would communicate more and work through their issues together, making their relationship more solid.
One common theme is family. Since it's about them having a baby, it often focuses on how they build a family unit. How they protect and care for their child.
One possible scenario in the fanfiction could be that Katniss and Peeta's baby becomes a symbol of hope in the districts. The baby might grow up with unique skills inherited from its parents. For example, having Katniss's archery skills in a more developed way in the future. It could also be that the baby's existence is a threat to the Capitol, so they have to keep it hidden and protected at all costs.
Survival in a new context is also a theme. They had to survive the Hunger Games, and now they have to survive the challenges of raising a child in their post - Games world. For instance, protecting the baby from any threats that might still lurk in their society.
One challenge could be the lack of resources. Their world is often harsh, and getting enough food, medical supplies for the pregnancy and for the baby later would be difficult.
Well, it might be about how their relationship evolves during the pregnancy. Peeta could be extremely protective of Katniss, and they might have to rely on each other more than ever. They could also be visited by old friends from the Games, who offer their support and advice. And perhaps there are some health scares during the pregnancy that make them realize how precious their family - to - be is.