itch.io

iirc there originally was an indicator in a really old build UI displaying pregnant, but nothing beyond that.  

Tho not all sections have been translated yet

You can change the language setting by going to "Setting(設定)" -> "Game Screen(ゲーム画面)" -> "Language Settings(言語設定)" after bringing up the menu with the F1 key which youll see across the top while in game.