There might not be a whole lot of fanfiction specifically focused on 'Nico throws up' within the Solangelo context. However, if you dig deeper into the Solangelo tag on fanfiction sites, you may find some stories where Nico experiences some sort of distress that could potentially lead to such a situation. For example, a story where he's been poisoned or is extremely ill due to some magical affliction. But it's really going to take some time to sift through the available works.
Well, in fanfiction, there could be several reasons. It could be that Nico is suffering from some sort of after - effect of a battle. Maybe he was exposed to a harmful spell during combat and now his body is trying to expel the negative energy. Another possibility is that he's feeling homesick for the underworld in a way that his body rebels against the surface world, causing him to feel ill and throw up. Or perhaps he's caught a strange disease that is affecting demigods, and the first symptom is vomiting. And, of course, there could be some sort of emotional turmoil related to his relationship with Will that is so intense it makes him physically sick.
Well, one possible plot could be that the other characters in the Solangelo universe are super confused at first. Percy might be all like 'Whoa, a baby Nico?'. They'd have to figure out how to take care of him. Maybe Will is the most determined to find a way to turn him back and in the process, there are some really cute and funny moments like baby Nico trying to grab Will's stethoscope and put it in his mouth.
Definitely Percy. He's always getting into wacky situations himself, and having a baby Nico around would just add to the chaos. He might try to teach baby Nico how to sword - fight with a toy sword, and it would be this really goofy scene with Percy making big, exaggerated moves and baby Nico just giggling.
Percy might tease Nico and Will a bit about it in a friendly way. But overall, it wouldn't change his relationship with them. He knows that the fanfiction is just the fans' imagination and not a true reflection of their real - life relationships. He would still be their friend and support them in their real adventures.
One popular solangelo hickey fanfiction is 'A Mark of Affection'. It beautifully portrays the relationship between the characters with some really sweet hickey - related moments. Another one could be 'Hidden Marks' which delves deeper into the significance of hickeys in their relationship in a very engaging way.
I'm not sure of specific 'Solangelo pregnant fanfiction' titles offhand. But you can try searching on popular fanfiction platforms like Archive of Our Own. There are often tags and filters you can use to narrow down your search to find the type of Solangelo - related stories you're interested in.
A great one is 'Solangelo in Middle - earth'. Here, they are transported to Tolkien's Middle - earth. It's fascinating to see how they adapt to this very different world and interact with the characters there, like Legolas and Gimli.
I'm not sure of specific Solangelo morning neck kisses fanfictions off the top of my head. But you could try joining some Percy Jackson or Solangelo - focused fan groups on social media platforms like Facebook or Tumblr. Fans there might be able to recommend some really good ones based on your specific interest.
One popular 'Solangelo first time fanfiction' is 'A New Beginning' on FanFiction.net. It beautifully captures the nervousness and excitement of their first time together in a very sweet and innocent way.
There's also 'Solangelo: Girls' Edition' which delves into the insecurities and self - discovery that Nico and Will experience when they turn into girls. The author does a great job of keeping their personalities intact while still exploring the new aspects of their changed genders. It's quite an engaging read.