Meant to upvote!!! Sorry!
Everyone can get pregnant. Even male alphas.
They can. I don't know if this mangaka made it so the fertile rates are equal, I don't think so but betas, even if their fertility is lower, can get pregnant.
GREAT! Ahh, yes! There's hope. I've also went back to re-read the intro page of "what's omegaverse", and I saw that one affirming sentence. 「 All humans became capable of pregnancy.」 ╮(￣▽￣)╭ Pray for mate. Pray for babies.
spoiler
they have a baby boy in future (▰˘◡˘▰)
Why must this couple be so angsty. Kudo has his heart all in. I hope we get to see Miyauchi's and Kudo's babies, later on too. I mean male beta can get pregnant too right?