Well, a simple idea could be that the pregnancy is a secret at first. Only a few close allies know. Jon and Daenerys have to be very careful to keep it that way. They might have some close calls where the secret almost gets out, adding a lot of tension to the story.
There could be characters like Tyrion. In many Game of Thrones - related stories, Tyrion is a complex and important character. He might interact with Daenerys in the fanfiction, perhaps becoming one of her advisors in her gaming - inspired adventures.
Sometimes, characters like Arya Stark are paired with Daenerys. Arya's skills as an assassin could be used to eliminate key targets in Daenerys' revenge plan. Their combined strength and determination would make a formidable force against their enemies.
Jon Snow is often included. His connection with Daenerys in the original series makes him a popular addition in fanfiction. He might team up with Daenerys to fight a common enemy or have a more complex relationship with her.
Jon Snow is often paired with them. His relationship with Daenerys in the show makes it a popular choice in fanfiction. He could team up with Daenerys and Drogon to fight against the White Walkers in new and exciting scenarios that were not shown in the original series.
Daenerys might become more politically savvy with Tyrion's influence. She could learn to make more calculated moves rather than relying solely on her dragons. For example, she starts to understand the importance of negotiation and compromise.
Tyrion Lannister could be involved. He was close to Daenerys and had a relationship with Jon as well. He might be the one to help protect the baby or offer his wisdom in raising the child. Another character could be Ser Davos. He was loyal to Jon and would surely be interested in safeguarding the future of Jon's heir.
Daenerys starts as a meek and powerless girl. But as she experiences hardships like being sold into marriage, she begins to toughen up. When she gets the dragons, she becomes more confident. In Slaver's Bay, she develops a sense of justice as she frees the slaves.
Perhaps their relationship begins with curiosity. Daenerys has heard of the powerful Robert in Westeros, and Robert is intrigued by this Targaryen with a claim to the Iron Throne. As they communicate more, they find common ground in their desire for a just Westeros. They might start to fall in love slowly as they share their dreams and fears, and work towards building a better future for the Seven Kingdoms.