One popular storyline could be how they support each other through the pregnancy. Maybe Sebastian is initially shocked but then steps up to be there for Santana. Another could be a story where they face challenges from their families or friends who are not as accepting. And a third might be a plot where they decide to raise the baby together in a non - traditional way, showing how their unique bond helps them through this new chapter in their lives.
Brittany would probably be super excited for Santana. She'd be all about helping with baby clothes and nursery ideas. As for Sebastian's friends, they might be a bit shocked at first since he has a bit of a playboy image. But then they'd come around and offer their support in their own ways.
A more complex plot could be that they are not sure who the father really is. This creates a lot of drama and tension. They could go through a process of trying to find out the truth, all while dealing with the fact that they are about to become parents. Their relationship might be on the rocks because of the uncertainty, but in the end, they realize that no matter what, they want to raise the baby together.
I'm not sure of specific authors, but you can start by looking at popular Glee fanfiction websites. Check the reviews and ratings for stories related to Sebastian and Santana's pregnancy. The authors with the highest ratings are likely to be good ones to read.
One great 'santana and sebastian glee fanfiction' is 'Unlikely Allies'. It shows an interesting dynamic between them as they team up for a singing competition against a rival school. Their banter and the development of their friendship (or more) is really engaging.
One great fanfiction is 'Sebastian and Santana's Duet'. It beautifully explores their complex relationship and how they support each other through the tough times at McKinley High. Their interactions are so well - written that it feels like an extension of the show.
I'm not entirely sure specifically about 'santana pregnant fanfiction'. However, many fanfiction communities are vast. It could depend on the fandom Santana is from. If it's a popular one, there's a good chance someone has written a story with that concept. You could also check related fan forums where fans might discuss or share such fanfictions.
Another possibility is that there's some confusion at first. Maybe a false positive pregnancy test leads to a rollercoaster of emotions for them. They could start planning for a baby only to find out later it was a mistake, but this experience could bring them closer as a couple.
You can start by looking on fanfiction.net. It has a large collection of 'Glee' fanfictions, including ones focused on Santana and Sebastian. Just use the search bar and type in their names.
The popularity comes from their interesting personalities. Sebastian is charming yet devious, and Santana is sassy and strong - willed. When combined in fanfiction, it creates a lot of drama and interesting storylines.