Well, since we don't have a lot of details, it could be that Amy had to make a choice between two or more difficult options. Maybe it was related to her family. For example, she might have had to choose between taking care of an ill family member or pursuing her own dreams. Another possibility is that it was a moral choice she faced in a particular situation at work or in her community.
There are no such pornographic stories involving Amy from Doctor Who. The show focuses on adventure, science fiction, and positive storytelling, not anything of an adult or inappropriate nature.
Possibly, it's a story where lemons have some magical or symbolic significance for Amy and the Doctor, leading them on an unexpected journey through time and space.
I'm not very familiar with this specific 'amy waldroop gracie's choice true story'. It could be a very personal or a relatively unknown real - life account. Maybe it's about a person named Gracie and her choices in life, with Amy Waldroop being somehow related, perhaps as a narrator or a key figure in the story.
Amy Pond added a lot of depth to the storylines. Her backstory, like the mystery of the crack in her wall, led to many important plot developments. It was related to the overall mystery of the Doctor's universe in that series.
Yes, you can find Doctor Who fanfictions that have Amy Pond pregnant. Fan writers often use this idea to add new dimensions to the characters and the story.