Some fans might recommend 'Bucky Barnes: Pregnant and Powerful'. This story could show Bucky as a strong character even during his pregnancy, defying the odds and expectations. There may be elements of him learning to adapt to his new state, dealing with the reactions of those around him, and still being an important part of the superhero world.
The relationship would shift in a major way. Captain America would have to be more nurturing towards Bucky. There would be a new level of intimacy as he helps Bucky through the pregnancy. They would have to communicate more openly about their feelings, especially since this is such an unusual situation. Their bond would be strengthened by sharing this unique experience, and they might even realize new depths of love for each other that they hadn't before.
Well, perhaps there's a villain who creates a situation where Bucky is impregnated as part of a cruel plan. Captain America discovers this and is initially shocked but quickly resolves to stand by Bucky's side. They go on a journey to find a way to reverse the situation while also facing the challenges of hiding Bucky's condition from the public and their friends in the superhero community. And along the way, their relationship deepens in unexpected ways.
These fanfics usually develop the plot around Bucky's transformation. Physically, he's going through the changes of pregnancy. Emotionally, he's growing too. He might have to face his past more deeply as he thinks about becoming a father. There could be medical mysteries involved, like how his enhanced body reacts to the pregnancy in ways different from a normal human. And the plot might also explore how the baby could potentially have special abilities or be a target because of who Bucky is.
Another challenge is appealing to fans of both franchises. Fans of Harry Potter may be very particular about how their beloved characters are used, and the same goes for fans of Bucky Barnes. The writer has to find a balance so as not to alienate either group while still creating an interesting and unique story that involves this strange crossover and the mpreg concept.
Well, it's quite possible that a 'bucky barnes sneeze fanfic' exists. Fanfic writers are known for their creativity and ability to come up with the most unexpected scenarios. Bucky Barnes is a popular character, and while a sneezing - based fanfic might seem strange, there are fanfics about all sorts of things. You could also try reaching out to Bucky Barnes fan communities on social media platforms like Tumblr or Reddit and ask if anyone has come across such a fanfic.
Fanfic often explores the idea of Bucky's metal arm sensitivity in relation to his overall state of mind. If he's in a stressed or emotional state, the arm might become more sensitive, almost like it's reacting to his internal turmoil. Writers may use this to show his vulnerability. For instance, when he's having flashbacks of his past traumas, the metal arm could tingle or ache, emphasizing the connection between his mental and physical state.
Trauma and recovery are very common themes. Given his history of being experimented on and used as a weapon, fanfics often deal with how he copes with his past traumas. Love is also a theme. Sometimes it's romantic love, where Bucky finds someone who can accept him for who he is, with all his flaws.
I'm not sure about specific 'Harry Potter Bucky Barnes Mpreg Fanfiction' as it's a rather unique crossover. You could try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide range of fan - created stories, and you might be able to find something related to this specific crossover there.
Maybe Sam had his own urgent matters to attend to and couldn't stay with Bucky. Or perhaps he thought Bucky would be better taken care of by the friend in that situation.