A great plot twist could be that Alison's pregnancy is a result of some time - travel or alternate reality situation. Maybe in another dimension, she got pregnant and now it's affecting this reality. Another idea is that the baby has some special powers that start to show during the pregnancy, causing all sorts of chaos and drama. And it could be that the pregnancy was faked by Alison herself for some very complex and personal reasons that unfold throughout the fanfiction.
One possible plot twist could be that the father of the baby is not who everyone initially suspects. Maybe it's a character who has been in the shadows all along. Another twist could be that Alison's pregnancy is part of a bigger conspiracy to take down her or her family. Or perhaps she discovers some magical or supernatural element related to her pregnancy that changes the whole story.
Another plot twist could be related to the health of the baby or Alison herself. There could be some complications during the pregnancy that force Alison to make difficult decisions. This could involve choosing between different medical treatments or dealing with the emotional stress of potential risks to the baby's well - being, and how it affects her relationships with those around her.
Perhaps Noel Kahn. He has always been a bit of a wild card in the story, and it would be an unexpected turn if he was the father. Also, Caleb could be a candidate. Given his relationships within the group, it would create interesting storylines. There's also the chance that it's an older character from Alison's past that we haven't fully explored yet.
It might also be a character that the readers least expect. Maybe a character who has always been in the background, like a childhood friend who has always had unspoken feelings for Alison. The pregnancy could be the catalyst that brings these hidden feelings to the surface and reveals their connection.
One possible plot could be that Alison discovers she's pregnant and has to figure out who the father is among the many secrets and potential relationships she has had. It could create a whole new layer of mystery in the PLL universe.
Well, perhaps the plot twist is that Gwendolyn is pregnant, but it's not a normal pregnancy. It could be a result of some sort of magical or scientific experiment gone wrong. For example, she was part of a study to find a cure for infertility, and instead, she ended up with an unexpected pregnancy that has strange side - effects. This would change the direction of the fanfiction completely.
A possible plot twist in a Daria pregnant fanfiction is if Daria decides to give the baby up for adoption, but then changes her mind at the last minute. This would create a lot of drama and also show her growth as a character. Or perhaps the baby has some sort of special ability or condition that Daria has to figure out how to deal with, which would be a huge change from the normal Daria - centric storylines.
A really interesting plot twist could be that the pregnancy isn't a normal one. It could be some sort of magical or alien - influenced pregnancy. For example, the baby might have powers from the very start of the pregnancy that start to show in strange ways, like affecting Videl's own abilities or causing strange events to happen around her.
One possible plot twist could be that the father of the baby is not who everyone initially suspects. Maybe there's some mystery or misinformation about that. Another could be that Annabeth's pregnancy is part of a prophecy that no one saw coming, and it has far - reaching consequences for the whole world in the fanfiction universe. It could also be that her pregnancy is threatened by some dark force that has a vendetta against her or her unborn child.
A plot twist could be that the pregnancy is not what it seems. Maybe it's an illusion created by a villain to distract them from a bigger threat. Raven and Damian might initially believe it's real and start making all these plans, only to find out later that they've been tricked.
One possible plot twist could be that they initially think they're not ready for a baby but then find out they are having twins. This would double the challenges and joys in their story.