While definitely not "old", the new "Narukami Occult Club 2" was released recently and definitely meets your criteria.
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There was also an older game from the same circle, "Princess Knight Rachel", whose partial could use an update. You made the initial partials for the game back in 2015, but now the game has been updated a few times and the old MEGA links are down. It meets the criteria and piqued my interest when I found it just now, so I thought I'd suggest it.
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Old ULMF Translation page:
https://ulmf.org/threads/ressentime...night-rachel-reicheru-re147124-rj147124.6537/
I have also been holding onto some games by a circle named Colopot, who emphasize pregnancy in their games. I don't know whether they are games that feature full pregnancy systems or the, "lose fight, get CG" type, but I thought I would mention them in case they're what you're looking for.
Here is their most popular work thus far:
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