(I'm not sure if I'm giving you the right context, or if you already know about it, etc etc, so blanket apology if required)

I understood and didn't take offence at the nitpick mainly due to the fact that foetus vs baby is an important argument in the pro-choice vs pro-life debate in the US; the "women should be allowed to control their bodies" side is usually presented with "should they be allowed to kill a baby to control their body", etc.