In the fanfiction about Maria from Roswell having a belly ache, it could be a side effect of a new power she's developing. Since Roswell is full of alien - human hybrids and people with special abilities, if Maria is on the verge of getting a new power, her body might be going through some changes that are causing the belly ache. Also, she could have been poisoned by someone who doesn't like her getting too close to the alien secrets. There are many characters in Roswell with different motives, and this could be a way to keep her out of the loop for a while.
The belly ache could slow her down. If she's usually an active character in the Roswell story, this pain might prevent her from helping her friends or getting involved in important events right away. For example, if there's a big alien - related event happening, she might miss it because she's in too much pain.
It could be that she ate something bad. Maybe she had some alien food that didn't agree with her human digestive system. In a lot of Roswell - related fanfictions, there are often strange new foods or substances that the characters come across.
She might try to rest. Just lying down and taking it easy could be her first step. This gives her body a chance to recover from whatever is causing the pain.
It could be Michael. Since they have a complex relationship in the Roswell series, it's possible that their relationship takes a new turn and he is the father. Maybe they had a passionate night together that led to the pregnancy.
One possible plot twist could be that the father of Maria's baby is not who she initially thought. Maybe there was some sort of mix - up at a fertility clinic or she was deceived by someone she trusted. Another twist could be that Maria discovers she has some sort of alien - related pregnancy, given the Roswell theme, which could bring in all sorts of strange powers or abilities for the unborn child. A third twist might be that Maria decides to keep the pregnancy a secret from most of the people in Roswell, but as she tries to hide it, she gets into all sorts of comical and tense situations.
If the pain is due to indigestion, lying down on her side in a comfortable position and taking it easy for a while can be beneficial. Avoiding any strenuous activity gives the stomach time to settle. Also, over - the - counter antacids can be used if the pain is caused by excess stomach acid, but it's best to consult a doctor or pharmacist first.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of Roswell fanfictions, including many about Michael and Maria. Another place is FanFiction.net. There are also some Roswell - focused fan communities on social media platforms like Tumblr, where users might share or recommend good Michael and Maria fanfictions.
One great michael and maria roswell fanfiction is 'The Unseen Bond'. It delves deep into their relationship, exploring how they deal with the challenges in Roswell. Another is 'Michael's Hidden Feelings' which focuses on Michael's inner thoughts regarding Maria. And 'Maria's Discovery' shows Maria finding out new aspects about Michael that she hadn't known before.
I'm not entirely sure specifically what a 'belly ache fanfic' is about as it could be very unique to the creator. It might be a fan - created story that somehow involves the concept of a belly ache, perhaps in a humorous or dramatic way within the context of a particular fandom.