Ah~ okay that makes sense I suppose, Which tier would unlock the Pregnancy content? cause Tier 2 is pretty expensive for the content that I want to unlock, or is there a way to unlock Pregnancy content naturally through gameplay? or is the Patreon the 'only' way

I've reached one of the quests that requires cumming in or being cummed in. 1st one appears at HR5. If this can't be unlocked through regular playing then it won't be done.