There would be a great deal of gratitude from Iris towards Shinra. She would likely feel guilty that he got hurt because of her. Shinra, on the other hand, might feel a sense of fulfillment in protecting her, despite the pain.
Iris remains alive in the Flash comics. The creators have kept her as an important and ongoing presence, and her role continues to evolve and contribute to the overall narrative.
I'm not sure if there is specifically a 'Ash gets Iris pregnant' fanfiction. There are countless fanfictions out there, but this particular theme might be quite rare or even non - existent depending on the nature of the Pokémon fan community's standards and the general focus of fan - created stories. Fanfictions usually range from adventure - based to friendship - focused within the Pokémon universe.
Obviously, Iris and the Flash are the main characters. Iris is the one who is pregnant, and the Flash is her partner, so they will be at the center of the story.