Sure. There might be some new characters created specifically for this fanfiction. Maybe a wise elder in the werewolf community who gives advice to Jacob about how to handle the situation with Bella and the pregnancy. Or perhaps a human friend of Bella's who discovers the truth and has to deal with the shock of the supernatural world.
Bella herself might struggle with her identity. She has been so caught up in the vampire world before, and now being with Jacob, a werewolf, she has to redefine who she is and where she belongs. She may also worry about how her human family and friends will react to her being with a werewolf.
Bella can be a great favorite too. Despite being caught between two powerful beings, she has her own strength. She's not just a damsel in distress. She has a mind of her own and makes decisions that often surprise both Jacob and Edward. Her ability to stand up to them and not be completely swayed by their powers is quite admirable.
One interesting plot twist could be that Bella realizes she doesn't want either of them and decides to go off on her own journey of self - discovery. This would completely change the dynamic of the love triangle.
A dominant Jacob is usually in touch with his alpha side. This means he has a natural leadership quality. He can command respect from others in the fanfiction world. And when it comes to Bella, this leadership translates into him guiding their relationship in a way that he believes is best for both of them. He may be more confident and self - assured, which can be both appealing and a source of conflict in the relationship with Bella.
One popular fanfiction could be 'Bella's Solitude with Jacob'. In this, they might go on a journey into the forest alone, where they have deep conversations about their relationship and the challenges they face. This could lead to a stronger bond between them, away from the chaos of the werewolf - vampire drama.
One character could be Seth Clearwater. As a member of Jacob's pack, he could play an important role in their married life. Maybe he helps them out in times of trouble or is like a younger brother figure to their family.
It would become more intense and complex. Jacob would be very protective, his werewolf instincts kicking in fully. He'd be constantly worried about Bella and the baby's safety.
Often, it portrays Jacob as being extremely protective of Bella due to the imprint. He is shown to put her needs above his own and be willing to sacrifice a great deal for her. For example, in many stories, he will fight against other threats, be it vampires or other werewolves, to keep Bella safe.
Some fan communities dedicated to the Twilight series might have curated lists of clean Bella and Jacob fanfics. You could join these communities and ask for recommendations. They often have members who are happy to share their favorite non - dirty fanfics.