Well, often there's a theme of secrecy. Harry might be afraid of what others will think or do if they find out about his situation. There could also be a theme of protection, with his friends or some unexpected allies trying to keep him safe from those who might want to harm him because of his unique state. And of course, there's the theme of how this affects his magical education and his relationships within the Hogwarts community.
One common theme is the struggle with identity. Harry already has a lot on his plate as 'The Boy Who Lived' and now with being mpreg, he has to reevaluate who he is. Another theme is the support system. It often shows how his friends and allies in the wizarding world either step up or falter in their support for him.
There are some out there. You can try searching on fanfiction - specific websites. Some might be hidden in the depths of those archives. Just keep in mind that the concept is quite unique and might not be as common as other types of Harry Potter fanfiction.
Another common theme is the discovery of magic. Since it's their first year, fanfiction often delves into how they experience new magical things together. They might explore parts of Hogwarts that are new to them and share their excitement about magic. For example, they could be in the library finding out about some rare magical spells. The theme of mystery also pops up a lot. There are often small mysteries in the castle that they try to solve as first - year students.
One common theme is the exploration of their complex relationship. It often takes their initially strained relationship and turns it into something more intimate and caring due to the mpreg situation.
Power dynamics can also be a theme. Given the nature of the characters Harry and Tom from the original source, their power relationship might be re - examined in these fanfictions, especially considering the added element of mpreg which can change the balance in different ways.
One common theme is the exploration of new relationships. In these fanfictions, Harry and Charlie often start from a basic acquaintance or friendship and then develop deeper emotional and romantic bonds. Another theme is the acceptance within the wizarding community. Since mpreg is not a common concept in the original wizarding world, the stories often deal with how others react and accept this new situation.
One common theme could be the exploration of their relationship in a new light. Since it's an unexpected situation, it often leads to a re - evaluation of their friendship and how it might turn into something more. Another theme might be the reactions of their friends and the wizarding community, as this is a very unconventional situation in the Harry Potter world.
One common theme is the exploration of the relationship between Harry and Severus in a very different context. Since mpreg is involved, it often delves into how they handle the unexpected situation, like Severus dealing with the physical and emotional changes of pregnancy while Harry is there to support him.
The theme of sacrifice also often comes up. The pregnant character may have to sacrifice certain aspects of their life, like their freedom or their career in magic. And there's the theme of acceptance. The character has to come to terms with their new state, and so do the people around them. It's about growing and changing in the context of this unique situation.
Love and sacrifice are also prevalent themes. The love between Harry and Charlie is tested and strengthened through the challenges that come with the mpreg. They might have to sacrifice their own desires for the well - being of their unborn child and each other.