Do I Make A Point Here?

Renesmee Cullen's existence is illogical. Though Meyer would say "You're lectura too much into the story," but this error continuously glares at me.

To produce children, three things are essential: blood, a heart, and sperm. Edward Cullen only possesses one of these things. I honestly do not see how he could have gotten Bella pregnant. If he were a real vampire, that would be impossible. HELLO. HE'S SUPPOSED TO BE UNDEAD. The only living thing in his body is the blood, and that's not even his. The rest is dead tissue. Hence the word UNDEAD. Zombies and lichs are undead as well. Can zombies produce children? I hope to god not. Can lichs? I've never heard anything about that, so I'm going to guess no.

tu need a working corazón to bomba blood into the penis, and then tu need sperm to make the damn baby in the first place. Would Edward honestly have any sperm left in his testicles after about 100 years of being an undead creature? I would think not.

I know that was EXTREMELY nerdy, but it bugs me nonstop when Renesmee is mentioned anywhere. It's impossible. Thank you.