One possible plot could be Phoebe discovers she's pregnant and tries to keep it a secret from the magical community at first because she fears for the baby's safety. But as her pregnancy progresses, strange things start to happen, and she realizes she needs the help of her sisters.
Obviously, Phoebe's daughter would be a main character. She would likely have her own personality, powers, and goals. Phoebe herself would probably also be a major character, perhaps as a mentor or a source of conflict depending on the story.
There could be a fanfiction where Phoebe's pregnancy is a result of a magical spell gone wrong. In this story, she has to find a way to reverse the spell without harming the baby. It might involve her sisters helping her search for ancient spells and artifacts. Also, a great fanfiction could explore Phoebe's relationship with Cole during her pregnancy, if they were still in contact, and how that dynamic changes.
Phoebe and Cole's love story in 'Charmed' was a complex and passionate one. They met and were initially attracted to each other. Cole was half - demon, but Phoebe saw the good in him. Their relationship had many ups and downs. At first, they were deeply in love, getting married even. But Cole's demon side often caused problems, leading to many conflicts with Phoebe and her sisters. Eventually, their relationship couldn't withstand all the challenges, but it was a very memorable and intense love story in the series.
Yes, there are likely some out there. You can start by looking on fanfiction websites. Some might focus on how Phoebe's pregnancy affects her powers in the 'Charmed' universe. For example, it could explore if her premonition power becomes stronger or more erratic due to the hormonal changes during pregnancy.
One great charmed phoebe daughter fanfic could be about her daughter inheriting unique magical powers and having to navigate the magical world just like Phoebe did. Maybe she discovers a new spell that Phoebe never knew about and uses it to solve a big mystery in the magical community.
You can start by looking on fanfiction websites such as Archive of Our Own (AO3). It has a large collection of 'Charmed' fanfictions, and you can use the search function to specifically look for ones related to Phoebe being pregnant. Another option is FanFiction.net, which also has a wide range of 'Charmed' - related stories.
The moment when Cole first saved Phoebe from a dangerous situation was quite memorable. It was the start of their connection. Their wedding was also a huge moment, filled with love and hope. But then, the times when they had to face the reality of Cole's demon side were also unforgettable. For example, when Cole's actions as a demon led to conflicts with Phoebe's sisters, and they had to figure out how to deal with it. These moments, both good and bad, made their love story so unique and memorable.
As a fan of web novels, I don't have my own subjective opinions, nor do I comment on the quality of novels. However, according to what I know, Boundless Charmed is a very popular online novel that has been loved by a large number of readers. The book told the story of Chang An, who grew up from a pure and kind girl to a vicious and sinister woman. The story is full of power struggles and political conspiracies. The plot is full of ups and downs, and the characters are vivid. It is very worth reading. However, reading novels is a very personal thing. Everyone has different tastes and preferences, so whether it's suitable for you or not still needs to be judged by yourself.
I recommend the following novels that are similar to The Unbounded Enchanter: The Reborn Villain's Supporting Female Lead Should Get a Divorce, The Sword of the Kingdom of Women, The Unparalleled Supporting Female Lead, Let Go of That Witch, The Uncrowned King, Traveling with Space, Hua Ding, Dawn of the Empire, Super Family Master System, Duke of the State, The Iron Blood Heroes of the Other World, and The War of the Warring States. These novels cover different topics and plots. I hope you can find something you like among them.