Yes, there are. Fanfiction writers have explored this concept. But the quality and style of these stories can vary greatly. You could try using specific search terms and filters on fanfiction platforms to narrow down your search.
Well, the two main characters are Clara and the Tenth Doctor. Clara is often portrayed as being resourceful and brave. The Tenth Doctor, on the other hand, has his own charm. He's very much into exploring and saving the universe. In this fanfiction, their interactions are what drive the story forward.
There are many talented writers in the fanfiction world. Sometimes, the ones who get noticed are those who take risks with their stories. For example, an author might create a story where Clara has to take on the role of the Doctor for a short time while the 10th Doctor is incapacitated. This kind of unique take on the characters can make an author stand out.
It varies! Sometimes Clara is held for ransom, and the Doctor has to negotiate. Other times, it's part of a larger conspiracy and Clara's kidnapping is just the tip of the iceberg.
It could be all sorts of things. Maybe Clara has to protect the baby from some alien threat or it could be a story about her raising a time-traveling baby.
The pregnant fanfiction about Clara in Doctor Who can range from heartwarming family-centered stories to complex plots involving time travel and the consequences of her pregnancy on the show's universe. It really depends on the creativity of the fans!
It could be for creating drama and tension in the story. Maybe it adds a new layer to their relationship or drives the plot forward in an unexpected way.