I've tried both pregnancy types on the latest version and they don't seem to work, the parasite count goes up when you add more, but the progress never changes even when you feed them eggs constantly and wait many days.
As for eggs, even with no parasites, they also don't appear. the status graphic xray shows eggs, but no info about the eggs, and when you go to a different area the eggs in the xray disappear. However, the birth count goes up after every sex scene that adds eggs, so it's almost like the pregnancy is happening instantly and I'm just not seeing it (unless I'm not understanding how the birth counter works).
I've also tried reinstalling the game and starting a new save, the issue is persistant.
thanks in advance