Cardi B is venting about a new houseguest who's been getting on her nerves ever since she gave birth to Stefon Diggs' son ... and it's her own mother!!!
The "Bodak Yellow" rapper hopped on social media and explained all the things her mom's been doing to drive her crazy.

Cardi says her pantry's missing some of her favorite snacks -- especially her late-night cravings -- and it's all her mom's doing.