You can try fanfic websites like Archive of Our Own (AO3). It has a large collection of fanfics, and you might be able to find Addison - related pregnant fanfics by using the search function. Just type in 'Addison pregnant' and see what comes up.
One common theme is self - discovery. Addison often discovers new aspects of herself during her pregnancy. Another theme is relationship changes. Her pregnancy can cause shifts in her relationships with friends, family, and colleagues.
In this fanfic, Addison and Jake's pregnancy journey could be filled with drama. Maybe there are some health scares during the pregnancy that make them worry. Addison, being a doctor herself, might be overly cautious. Jake would try to keep her calm. Their friends in Private Practice could also play important roles. Some might offer great advice, while others could accidentally cause more stress. The story could end with the birth of a healthy baby and Addison and Jake realizing how much their relationship has grown through this experience.
One popular Addison pregnant fanfic could be 'Addison's Journey to Motherhood'. It might focus on her emotional and physical experiences during pregnancy. Another could be 'Addison's Pregnant Adventure' which could involve her dealing with various challenges and joys of being pregnant in a fictional setting.
There's a fanfic titled 'Pregnant Addison: A New Chapter'. It focuses on how Addison's pregnancy changes her perspective on her career and her personal relationships. It's a really interesting read as it shows her growth and how she adapts to the new challenges. The story also includes some heartwarming moments with her friends and colleagues as they support her throughout the pregnancy.
One popular Addison pregnant fanfiction could be where it explores her journey through pregnancy with a lot of emotional turmoil. It might focus on how she deals with the changes in her body and her relationships. For example, in some fanfictions, she might struggle with her career while being pregnant.
The relationship could also develop in a more platonic way. They could be like sisters, supporting each other during doctor's appointments and prenatal classes. They might have arguments along the way, but always come back to support each other because they know how tough pregnancy can be.
Another theme is the relationship changes. Her relationship with the baby's father might be explored, whether it's a new relationship or an existing one. There could also be changes in her friendships as she focuses more on her upcoming motherhood.
A simple plot could be that Addison and Jake are happily in love when they find out about the pregnancy. They then start to decorate a nursery in their home, choosing soft colors and cute furniture. They also attend parenting classes together to prepare for the new arrival.
One aspect that might be explored in such fanfiction is Addison's medical decisions during her pregnancy. Since she is a doctor herself, it would be interesting to see how she balances her own health and the health of her unborn child while still being involved in the complex cases at the private practice.