
Seth isn't a women, so there was no way to make him infertile "Both ways" to begin with. What he did was basically cause Seth to shoot blanks. If Seth had the ability to be fertile as a female, Osiris wouldn't have gone through the trouble of trying to give Seth the ability to birth children. If this does turn into an Mpreg situation, the most likely scenario I see is that Osiris only THOUGHT he failed when he tried to give Seth a womb. It would be funny if it did happen because Seth has been with so many ppl, I could see all the guys arguing over who the daddy is and trying to claim the baby.
I know this sounds weird, but they have been mentioning children and birth for a bit now since Seth and Horus got it on in the temple, it doesn’t help they have been suggesting the gods are either both Female/Male/Genderless enough for me to think it could be a possibility. And Horus has lost his “instincts” so maybe his “instincts” have been passed on?