Jessica Chambers was a victim in this story. She was a young woman who unfortunately became the center of a very tragic and mysterious case when she was found burned in a vehicle.
The main distinction of porn with a story genre from regular porn is the presence of a coherent narrative. Regular porn often jumps straight to the sexual action, while the story genre tries to add some kind of story framework around it. But in the end, both are adult-oriented and feature explicit sexual content.
Jessica in Dune was indeed pregnant. According to the contents of document 1 and document 2, Jessica was pregnant with Paul's sister, Alia. When Jessica's mind was united, Alia, who was in her belly, also entered the state of mind unity. She became the Virgin Mary before she was born and obtained the memories of her female ancestors and all male ancestors. In addition, documents 3 and 6 mentioned that the Lady Jessica, for the love of Duke Atreides, had deviated from the plans of the Sisterhood and given birth to a boy, Paul. Therefore, it could be confirmed that Jessica was pregnant in " Dune."
Well, it's hard to say for sure. The concept of 'porn-like' is quite subjective. Some might consider certain novels with excessive sexual descriptions as such, but it depends on individual perspectives and cultural standards.
In many places, 18+ porn comics are considered illegal. This is because they can have a negative impact on society and violate moral and legal standards.