They can with an alpha female. https://archiveofourown.org/collections/OmegaverseGeneticsandRelatedMeta
https://archiveofourown.org/works/403644?view_full_work=true (chapter 2)
@Itzarit
I'm quite new to the idea of alpha pairings bearing children (without any sort of hardships). In western fandom, it's mostly played as an actual gay pairing since theoretically, it should be very difficult to conceive--but with Japanese manga A/B/O traits seem to boil down to a caste system.
A male omega can get pregnant with another male.
But what about two females? Can a female omega get pregnent with another female? Is that possible??