No, and I don't think that's a kink I'll be adding for a few reasons, one of which being the science of the worlds. Most species' biology isn't compatible with human biology. So if that's a kink you're looking for, sorry to disappoint, but no plans to add pregnancy thus far.
WCA is a lot more about the story and the emotional connection than the kinks, though, so if you're hunting for a specific kink or fetish, there are way better games for that. If you're looking for story depth and emotional tension, where intimacy really means something, that's more in line with what WCA is about. Yes, we do explore certain kinks, but I find it hard to include things like pregnancy because it's something I'm not into, and writing something you have no love of can really feel cheap and do it a disservice to those who DO like it. And I don't wanna do that with something that someone loves.
Hope that makes sense :)