Maybe she'll find a new place to hide and start a new life. She could meet some new characters who will either help or hinder her. For example, she might come across a group of kind-hearted aliens who offer her shelter.
In the fanfic, Bulma may try to find a way back to her friends and family. But she has to be careful as there could be threats following her. There might be some plot twists where she discovers that someone she thought was an enemy is actually trying to protect her, and this new alliance could be the key to her getting back to her normal life.
Perhaps Goku. Goku has a big heart and he's always ready to help those in trouble. He could sense Bulma's distress and come to her aid.
Bulma might cut off all communication with Vegeta. She could focus solely on her own work and taking care of their child without Vegeta's presence. For instance, she might pour all her energy into her scientific research.
Next, Naruto might meet new allies. He could encounter other ninjas who have also had run - ins with their families. They could form a group and train together, becoming stronger and more independent from their families.
He might meet a rare Pokémon that no one has ever seen before. This Pokémon could become his new partner and help him in a new way of battling.
After running away, she could start a new life as an anonymous witch. She could use her skills to help Muggles in secret. She might use magic to heal the sick or prevent disasters in the Muggle world. This new life could give her a sense of purpose and also make her a more well - rounded witch as she learns about the Muggle way of life and how to integrate magic into it in a more discreet way.
Well, it could be about Bulma being so frustrated with something Majin Buu does that she gives him the silent treatment. Maybe Buu accidentally destroys one of her inventions in her lab, and she's had enough. So she ignores him, which makes Buu really confused because he doesn't understand human emotions that well.
One possible plot could be that Majin Boo has done something really bad that affects Bulma. But then, through a series of events, like Majin Boo saving Bulma's life or showing remorse in a very genuine way, Bulma begins to consider forgiveness. Maybe Majin Boo has to sacrifice something important to prove his change of heart, and in the end, Bulma fully forgives him.
It could be that Naruto discovers something about the nature of his pregnancy that scares him. For example, he might find out that the child has some sort of special power that could put it in danger. So he runs away to figure out how to handle the situation without endangering the village or the child. He might seek out a hermit or an old sage to get advice on what to do.
The plot could start with Majin Vegeta's pride getting in the way. He might feel that Bulma is disrespecting his new power as Majin Vegeta. So, he challenges her to a fight. Bulma initially panics but then decides to stand her ground. She uses her knowledge of Saiyan physiology (from all the time she's spent with Vegeta and the other Saiyans) to find his weak points. However, she also tries to reach out to the real Vegeta inside. As the fight progresses, Vegeta starts to see how strong - willed Bulma is and slowly begins to break free from the Majin influence.
It could also be due to the general nature of Majin Boo. He was initially a villain created for evil purposes. His appearance and the way he carried out his actions were often grotesque and malevolent. Bulma, who is used to a more civilized and scientific environment, might be repulsed by his very existence and find it unforgivable that he was able to cause so much trouble in their world.