Well, a possible plot could be Sunset Shimmer facing discrimination or misunderstandings from some ponies in Equestria because she's pregnant. This would then lead to a story about her proving herself and showing that she can still be a great friend and contribute to the community. Also, the story could focus on her preparing for the arrival of her baby, like decorating a nursery or learning how to be a mother. And perhaps there could be a sub - plot where she has dreams or visions about the future of her child.
One idea could be that Sunset Shimmer has to balance her pregnancy while still dealing with her magical studies. She might face challenges from her peers who doubt her ability to continue her progress while expecting. Another plot could involve her searching for a special kind of magic to ensure a healthy pregnancy for her and the baby. And perhaps she forms a new friendship with someone who has experience in both magic and motherhood, who guides her through this new phase of her life.
A third idea is that the male OC is from a different dimension. He accidentally lands in Equestria and meets Sunset Shimmer. At first, Sunset is suspicious of him but realizes he's lost and in need of help. They embark on a journey to find a way to send him back home. Along the way, they encounter various obstacles and have to rely on each other's strengths. This adventure brings them closer together, and by the time they find a way for him to return, they have developed deep feelings for each other.
One plot idea could be Sunset Shimmer facing a mysterious challenge in the human world that only she can solve with the help of Anon. Maybe a magical object is causing chaos and they have to figure out its origin and how to stop it.
One idea could be that Sunset Shimmer somehow gets transported to the Naruto universe. She could use her magic skills in unique ways there. Maybe she teams up with Naruto to fight against a common enemy like an Akatsuki member who has some strange magic - like powers. They could learn from each other's combat styles and grow stronger together.
Well, finding the best MLP Sunset Shimmer pregnant fanfics can be a bit of a hunt. Some fanfics might focus on the emotional journey of Sunset Shimmer during her pregnancy, like how she deals with the changes in her body and relationships. Others could be more about the reactions of her friends and the Equestrian community. You really have to dig in and explore different stories to find the ones that resonate with you. It's also important to note that the quality can vary greatly, so don't be afraid to skip over ones that don't seem well - written at first glance.
One idea could be a crossover with the Harry Potter universe. Sunset Shimmer could be a new student at Hogwarts, and her magical abilities from her own world could interact in interesting ways with the magic in the wizarding world. For example, her ability to transform might be mistaken for a new and strange form of Transfiguration.
A common theme is redemption. Since Sunset had a bit of a dark past in the MLP universe, many fanfictions focus on her journey to make up for her wrongdoings and become a better person, or pony in some cases.
You can try searching on FanFiction.net. It has a large collection of My Little Pony fanfics, and you can use the search bar to look for stories related to Sunset Shimmer being pregnant.
Friendship is a very common theme. Since they are both important characters in the MLP universe, many fanfictions explore how their friendship develops over time, whether it's through shared adventures or helping each other out in difficult situations.
There's also 'Sunset and Twilight's Adventure Beyond Equestria'. This fanfic takes them on a journey to a new land where they have to learn about a different kind of magic. It's full of exciting twists and turns as they face challenges together and grow as friends. It really delves deep into their characters and how they can rely on each other.