The due date is June 15, he added, calling her a "Little Gemini."
But it doesn't seem like the Compton rapper was necessarily ready to share the news. He laughed, "Ya;ll got me up here releasing information that I ain't supposed to be releasing.... Ya'll tryna scare my birds off."
"I ain't tripping," he continued. "I'm like already a dad. I take care of my whole family."
YG also explained how he and DJ Mustard ended their beef -- with a fist fight.
"Me and the homey, we fought and we got it over with and we homies, we gonna stay homies. This ain't the first time," he said.
Watch the whole clip here: