omg don't say "I'm sorry" Miyauchi...imma cryin'. You deserve to be happyyyy.. You should ...

can beta's have babies?

Yes they can, in this manga
In omega Versa world, anyone can get pregnant. Omega fertility rate is higher than alpha and beta. But this rule, anyone can get pregnant, can be changed if the author chose to.

oh, cool then, I am really hoping for his pregnancy.. I have always been worried about him loving an alpha who might find his soul mate, but it still would be awesome if he could have a baby and I'll try not to worry about the future:)