In this type of fan fiction, a possible plot could be centered around the identity of the father. It could be a mystery that Harry is trying to solve while also dealing with the pregnancy. Maybe it was a result of some strange magic gone wrong. Or perhaps it was a relationship that he was trying to keep secret. This could lead to a lot of self - discovery for Harry as he figures out who he is and what he wants in life while also bringing a new life into the world.
Well, perhaps a plot could involve Harry having to hide his pregnancy at first. Maybe there are some dark forces or old wizarding traditions that would put him in danger if it were known. So he has to go through the early stages in secrecy, which adds a lot of tension. And then when it's finally revealed, it could cause a stir in the wizarding world, with some people being accepting and others being very judgmental.
One idea could be exploring how Harry copes with the physical and emotional changes. For example, he might struggle with the new limitations his pregnant body has while still trying to be involved in his usual activities like magic training. Another plot could be about the reactions of his friends. Hermione might be super supportive and researching all she can about wizarding pregnancies, while Ron could be initially shocked but then grow to be very protective.
One idea could be that it's a magical accident due to a misfired spell. Maybe Harry was trying to help someone with a fertility spell and it backfired on him. Another could be that it's part of some ancient prophecy where a male must carry a child for a great purpose. And perhaps there's a new type of magic that allows male pregnancy and Harry is the first to experience it in the wizarding world.
One idea could be exploring Dumbledore's early years as a student. Maybe he had a secret friendship or rivalry that shaped his views. Another could be a story where Dumbledore has to face a powerful dark wizard before Voldemort, and how that experience influenced his later actions against the Dark Lord. A third idea is to write about Dumbledore's travels and the magical creatures and cultures he encountered during them, which might have given him insights for Hogwarts' teachings.
Perhaps in the fanfiction, Nathan and Max are in a world where they are part of a special group or have unique powers. Their pregnancy could be a result of some kind of magical or extraordinary event. They then have to deal with not only the pregnancy but also protecting their unborn child from those who might want to use its potential powers.
Well, perhaps Apollo and Percy are in a secret relationship. The pregnancy could be a result of a magical experiment gone wrong. They then have to hide it from the other demigods and gods. Percy might be worried about how his friends will react, while Apollo is more concerned with the divine implications. They could go on a journey to find a way to reverse it, but along the way, they start to bond more with the unborn child.
Maybe in the fanfiction, Harry's marriage is a political move within the wizarding world. He marries someone from an important pure - blood family to help unite different factions. This could lead to a lot of drama as he has to deal with the politics and also keep his own values intact.
One idea could be exploring the backstories of minor characters. For example, the life of Neville's parents before they were tortured by Bellatrix. Another could be a story set in a different wizarding school around the world and how it interacts with Hogwarts. Maybe a story about a group of students from Beauxbatons and their adventures during the Triwizard Tournament that we didn't see in the original books.
One idea could be that Harry Briggs and Tatum go on an adventure through a magical forest. They discover hidden creatures and have to work together to solve a mystery that the forest holds. Another could be a story where they are in a school setting and form an unlikely friendship that helps them both overcome their personal challenges.
I'm not sure if there is such a specific fan fiction. Fan fiction can cover a vast range of wild and creative ideas, but this one seems rather unusual and might not be a common theme. However, the Harry Potter fan fiction community is huge, so it's possible that something like this exists in some corner of the internet.
One possible plot point could be how Harry and Charlie deal with the unexpected pregnancy. Maybe they face challenges from their families or society. Another could be the emotional journey of Harry as he adjusts to the physical and mental changes of pregnancy.
Another plot could be that Charlie and Harry are working on a special project together. During this time, they fall in love and Charlie gets pregnant. But there are outside forces, like a rival group that wants to stop their project. So they not only have to deal with the pregnancy and their relationship but also fend off the threats to their work and future as a family.