There are fanfictions where Bella's pregnancy in New Moon is a sign of a prophecy. This could involve ancient vampire or wolf prophecies that the Cullens and the wolves must work together to figure out, creating a more complex and engaging plot.
Some fanfictions focus on the time when Bella was separated from Edward in 'New Moon'. They might explore what Bella was really thinking and feeling during that time more deeply. It could show her inner struggle and how she coped with the loss in ways that the original story didn't fully cover.
One interesting Twilight Bella pregnant fanfiction could be where Bella's pregnancy has unexpected effects on her vampire abilities. For example, she might start to develop new powers that are a combination of human and vampire traits. This could add a whole new layer of drama and mystery to the story.
One popular Bella and Rosalie pregnant fanfiction might be where they support each other through their pregnancies in a world that's different from the original Twilight setting. For example, they could be in a modern AU (alternate universe) where they are just normal women dealing with the joys and challenges of pregnancy together.
Well, in certain fanfictions, Edward leaves Bella due to a misunderstanding. Maybe he saw Bella with another guy and misinterpreted their relationship. Or perhaps he got some wrong information about Bella's feelings for him. He then decides to leave in a huff. There are also some more creative ideas in fanfiction, like Edward being magically compelled to leave by a witch - like character who has some vendetta against Bella and wants to see her heartbroken.
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.
A great one is 'Bella's New Moon Pregnancy Surprises'. In this, Bella discovers she's pregnant much earlier than expected in the New Moon timeline. It has a lot of emotional moments as she tries to deal with the reactions of Edward and her family.
Some fanfictions focus on Bella's relationship with Jacob during 'New Moon' from a different perspective. Instead of just the love triangle aspect, they might explore how Jacob's presence helps Bella heal in a more profound way, and how it could potentially change her feelings for Edward in unexpected ways when he returns.
One interesting 'Edward Bella New Moon' fanfiction could be those that explore Bella's life during Edward's absence in more depth. For example, fanfictions where she discovers new powers on her own.
One interesting aspect could be how Bella copes with being pregnant alone after Jacob leaves. Maybe she leans on her other friends in the story for support. Another could be the reaction of the werewolf pack to the situation, whether they choose to help Bella or not.
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.