I don't think there's a legitimate way to get free Venom comics. Comics are the work of artists and writers who deserve to be compensated for their efforts. Buying them is the right way to enjoy and support the industry.
Definitely not. The comic storyline for Eddie and Venom doesn't take that marital turn. It's focused on their adventures and battles, not a marital commitment.
Definitely not. The idea of Venom getting Eddie pregnant is not part of the established comic narrative. Comics typically follow a set of logical and consistent rules, and this just doesn't fit within that framework.
In the comics, Venom's arrival on Earth was tied to experiments with alien symbiotes and some cosmic forces gone awry. There were many factors at play that led to this event.
Pikachu would likely be very angry. It loves Ash deeply and being separated from him would make it furious. It would probably immediately start attacking Team Rocket with its electric attacks. It might also try to find a way to communicate with Ash, perhaps by using its electrical signals in a way that Ash could somehow detect from a distance.