Yes, there are some good ones. You can start by looking on fanfiction platforms like Archive of Our Own. There, you might find various takes on Natasha being pregnant in the Avengers universe. Some might focus on how the other Avengers react to the news, while others could explore Natasha's own emotions and challenges during the pregnancy.
In these fanfictions, a common theme is the relationship between Natasha and the father of the baby (if it's specified). Whether it's a fellow Avenger or an original character, their relationship is often central. Another theme is the challenges Natasha faces in a world full of danger as a pregnant woman. How does she continue to be a part of the Avengers' missions? And the theme of hope is also there. The baby represents a new beginning, a hope for a different future for Natasha and the team.
One possible fanfiction could be about Natasha's sister joining the Avengers. Maybe she has some unique powers like the ability to control minds on a small scale. She could start as a bit of an outcast, but as the story progresses, she earns the respect of the team through her courage in battles.
One great 'Avengers Steve and Natasha fanfiction' is 'The Red and the Blue'. It beautifully explores their relationship in the context of their Avengers duties. The author does a wonderful job of showing their mutual respect and the unspoken connection between them.
In a fanfiction scenario, Natasha and Steve's relationship could develop in a way that leads to her pregnancy. Maybe it starts with a deep emotional connection during a difficult mission. As Natasha goes through the pregnancy, she struggles with her identity as a former assassin becoming a mother. Steve, on the other hand, draws from his own values of family and protection. The birth could be a moment of great joy and new beginnings for them, symbolizing a new chapter in their lives not just as individuals but also as a couple within the Avengers family.
First, they would need to figure out if it was a trap. But assuming it's not, they could divide into teams. One team, like Ant - Man and Wasp, could infiltrate the place in a stealthy way. Meanwhile, Doctor Strange could use his magic to create illusions and misdirect the captors. The Avengers would have to work together, combining their different powers and strategies to rescue Natasha successfully.
To develop kid Natasha, you could focus on her backstory. Maybe she was an orphan and had to learn to fend for herself at a young age. This would make her resourceful and street - smart.
In many of these fanfictions, Natasha's character is explored through her vulnerability when she's sick. For example, in some stories, we see her usual tough exterior crack, revealing her fear and dependence on her team mates, which is a side of her we don't often see in the movies.
One common theme is the idea of finding solace in each other. Both Bruce and Natasha have troubled pasts, and in fanfictions, they often find comfort in their relationship. For example, Bruce can understand Natasha's feeling of being an outsider sometimes because he also feels like he doesn't quite fit in due to the Hulk.