There could be. Fanfiction writers are known for coming up with unique and unexpected twists on the original stories. Since 'Dear John' has a strong emotional core and the character of Savannah is significant, a pregnancy storyline for her might be an interesting angle for some fanfic writers. However, not all fanfiction is easy to find, and it may take some time to dig through different platforms to see if there's one out there.
Well, it's hard to say exactly. It could have emerged from an author's imagination or been based on real-life events that were later fictionalized. Sometimes, such stories evolve over time and it's difficult to pinpoint the exact origin.
The communion story in the book of John is usually located in the chapters related to the Last Supper. You might find it by looking closely at those sections.
The setting of John Steinbeck's short stories varies. Sometimes it's in small towns, other times in the countryside. It really depends on which story you're referring to.
You can try looking for it in local libraries. They often have a wide range of novels. Another option is to check online bookstores such as Amazon. Sometimes, second - hand bookstores might also have a copy.