A common theme is the exploration of their deep emotional connection. Fanfictions often dig deeper into how they understand each other on a very profound level.
One great piece of Ross Poldark and Demelza love fanfiction is 'The Unspoken Promises' on FanFiction.net. It beautifully delves into their relationship, exploring the unsaid emotions between them in a very tender way.
In the fanfiction, it might be that there was a special event. For example, a big gathering where people from different places came together. One of the guests had the flu but didn't know it. Demelza interacted with this person, like sharing a drink or just being in close proximity for a long time, and as a result, she got the flu.
It could lead to her being bedridden for a while. And this might make other characters worry about her. For example, Poldark himself would be very concerned and might neglect some of his own affairs to take care of her.
One popular 'ross and demelza fanfiction' story could be about their life after the series ends, showing how they deal with new challenges in Cornwall. Another might focus on a what - if scenario, like if they had met under different circumstances. There are also fanfictions that explore their relationship in more depth during the time gaps in the original story.
During the pregnancy, Ross's character could develop more of a nurturing side. He might become more gentle and patient, which is different from his usually tough exterior. For example, he could be seen spending more time at home, listening to Demelza's concerns. Demelza, in turn, could become more assertive in her needs for the pregnancy. She would no longer be shy about asking for things like special foods or extra rest.
You can start by searching on popular fanfiction websites. Look for ones with high ratings and a lot of reviews. The reviews can give you an idea of whether the story is well - written and true to the characters of ross and demelza.
It could also be that she came into contact with someone who was ill. In the close - knit community in Poldark, diseases can spread easily. If she was near a person with an infectious illness, she might have caught it and developed a fever as a result.
Ross would be extremely worried. He would likely call for the doctor right away and stay by Demelza's side, constantly checking on her temperature and making sure she was comfortable.