We don't know. There was some research done on embryonic development of mice and rats in microgravity, both impregnated females sent to orbit and later recovered (mostly onboard Space Shuttle, but Russians also sent in orbit similar experiments), and even more frequently by using 3D clinostat to ...

The Russians did some early testing with rats (Packing for Mars: The Curious Science of Life in the Void, By Mary Roach pg 245) and natural means did not result in pregnancy. Later testing shipped pregnant rats into space, where some health issues developed. NASA research indicates that female a...

So, in this case, I asked back in the chat about the side-effects of childbirth AND what legal implications that would have for a person born outside of a celestial body; a "spacer", if you will. So, say that next year, the first human is born in the ISS. He survives the process of childbirth, ...