As long as the kid ends up OK, I guess I'm fine with this. The only thing is, that... well, IRL, this is the guy's choice and it's all right, but I have mixed emotions. See, there's one aspect of fanfic all about mpreg (male pregnancy), and I always found it kind of squicky (please don't ask me about the Trek mpreg stories I accidentally read, I'd rather not remember). But now I find it fine in real life? That seems hypocritical.
But I really do hope the kid is fine, and the pregnancy/birth goes without trouble. That's quite a thing to be remembered as the first to do it...