If Bella gets pregnant in the New Moon fanfiction, Edward's reaction would be intense. He loves Bella deeply, and this situation would be both a joy and a terrifying ordeal for him. He'd be researching every possible aspect of a human - vampire pregnancy. Jacob would be in a state of disbelief. His relationship with Bella has been complicated, and this would add another layer of complexity. He might try to convince Bella to leave the Cullens. The Cullen family would be focused on the medical and safety aspects. Esme would be motherly and nurturing towards Bella, while Rosalie might have mixed feelings, given her own past experiences with wanting a child. Charlie would be a mess of emotions, from confusion to anger to deep concern for his daughter.
Harry would probably be in a state of shock and disbelief at first. He'd be filled with a mix of fear, confusion and anger. Voldemort might be initially dismissive or see it as an opportunity to further his own dark plans. Hermione would be practical, trying to find solutions in books and magic. Ron would be more likely to be openly disgusted at first but might come around to support Harry as a friend.
Edward would be extremely distraught. He might blame himself for not being there to protect Bella. He would likely stay by her side constantly, using his vampire abilities to try and heal her if possible. Alice, on the other hand, might have seen the accident coming in one of her visions but was unable to prevent it. She would be filled with guilt and would try to use her visions to figure out how to help Bella recover.
Edward would be completely shattered. He might lose all sense of purpose and even consider ending his own existence. Jacob would be filled with anger and grief. He might blame Edward and the Cullens for not protecting Bella. Charlie would be heartbroken and would likely be in a state of shock for a long time.
One possible development could be that the relationship between Bella and Edward becomes even more complex. Edward might feel a stronger sense of protectiveness towards her. Also, it could lead to a rift between Bella and Jacob, as Jacob may not be able to handle the situation well. The Cullen family would also be greatly affected, having to deal with a pregnant human in their midst.
The characters' reactions would be diverse. Harry, being the main character, would likely feel a great sense of responsibility. He'd have to face the judgment of both the wizarding community and the vampires. Hermione would be her usual studious self, looking for any precedents or magical knowledge to help. Ron would probably voice his concerns loudly, thinking it's a dangerous and strange situation. The vampire involved would have her own emotions, perhaps a mix of fear and hope for the future. And other vampires in the community could range from being supportive to being hostile depending on their beliefs and positions within the vampire hierarchy.
Jaime could be torn between his loyalty to his family (if we consider the complex family dynamics in the original story) and his new - found responsibility towards Sansa and the unborn child. He might try to find a way to make things right in his own way. Sansa would start to think about how this affects her political standing and her relationships with other characters. She may seek out allies who can help her through this difficult time, all while dealing with the emotional turmoil of being pregnant in such strange circumstances.
Katara would likely be shocked and initially angry. She has feelings for Aang and would be hurt by this unexpected turn of events. Zuko, on the other hand, might be conflicted. He wants his sister to be better but this situation is so out of the ordinary. Toph would probably be more straightforward and say what she thinks, which could be a mix of disbelief and amusement.
Klaus's family, being a complex and often power - hungry group in many fanfictions, might have mixed reactions. Some may see the pregnancy as a way to gain more power or influence. For example, if the baby has some special abilities, they might try to use the baby for their own purposes. Others may be worried about how this new addition will change the family dynamics.
Sakura would probably be very shocked and disappointed in Naruto. She has always had deep feelings for him. Kakashi might be more level - headed, trying to figure out how to handle the situation from a strategic and diplomatic point of view.
The professors in the Pokémon world, like Professor Oak, would likely be concerned but also offer their wisdom. They could provide resources or knowledge about how to take care of a pregnant woman in the Pokémon world. The other trainers that Ash and Bonnie know might have a mix of reactions. Some might be supportive, while others might spread rumors or be jealous. Overall, the reactions would add a lot of drama and depth to the fanfiction.