There might be such fanfiction in the vast realm of fan - created works, but it would be a very non - canon and strange crossover considering Naruto is from the Naruto series and Toph is from Avatar: The Last Airbender. However, this kind of crossover fanfiction often explores unique and unexpected scenarios.
I'm not sure if there is exactly a fanfiction where Naruto gets Toph pregnant. Fanfiction can cover a huge variety of scenarios, and crossovers like this are not unheard of. But it's also not a common or typical combination that one would immediately find. You might have to search through some specialized fanfiction websites and dig deep to see if such a story exists.
In the world of fanfiction, almost any scenario can be created. But Naruto and Toph are from two completely different fictional universes. While it's possible that some creative fan has written a story where Naruto gets Toph pregnant, it's likely to be a very niche and perhaps even a little out - there piece of work. There are so many different types of fanfiction, from the most romantic to the most outlandish, and this would fall into the more outlandish category if it exists.
The best chapter pointer here is Chapter 54, "Acting Righteously Hits the Trending List Again!". It opens with Five minutes later, the people of Chixia Village, who had received the... and closes on She was also polite and friendly, and to top it off, she was good-looking,....
Look to Chapter 40 for the clearest answer. It begins with [Jiang Li claims she copied this herself?, keeps building through But her calligraphy is actually this pretty?] [Jiang Li dares to boast,..., and lands on The handsome guys on this show are so difficult to deal with..
The best chapter pointer here is Chapter 77, "Why are you sabotaging me again?". It opens with Wen Jiaojiao's reminder calmed Shu Yan down. and closes on But who knew that the next second, the lottery box would be handed over to....
A practical answer is Chapter 84, because it turns the idea into a concrete scene. The chapter opens with When the villagers tasted his curry beef one by one, their faces revealed..., adds pressure through [Pfft, and she's teaching others how to cook, isn't it just scrambled eggs..., and ends on.
Chapter 77 is the strongest chapter-level answer because it starts from Wen Jiaojiao's reminder calmed Shu Yan down. and follows through on But who knew that the next second, the lottery box would be handed over to....
Chapter 74 is the strongest chapter-level answer because it starts from Having seen Jiang Li's ID before, he knew that this person named Shiguang... and follows through on The man's phoenix eyes narrowed slightly, he looked at the girl sitting....
Chapter 45 is the strongest chapter-level answer because it starts from Helplessly, Jiang Yan had no choice but to step on the accelerator. and follows through on The guests have to go through so many troubles on the way, while these....
If you want the clearest chapter reference, go to Chapter 55. Early on, Su Yinwan hadn't expected that, in just one day, Jiang Li's reputation had...; later, the chapter leans on Yet she was clearly the wretched cannon fodder of this book..
The best chapter pointer here is Chapter 14, "She Looks So Cool Dancing with a Gun". It opens with Lin Manru had a rare good night's sleep. and closes on But clearly, Lin Manru was unable to accept that her delicate daughter had....
A practical answer is Chapter 37, because it turns the idea into a concrete scene. The chapter opens with The barrage was suddenly filled with hahas, but the two guests present..., adds pressure through The moment her gaze landed on her, she couldn't help but pause., and ends on I look forward to.