Cardi B and Stefon Diggs have officially started a new chapter together.

While musing about all of her recent new beginnings in a Nov. 13 Instagram post, Cardi, 33, revealed that she and the 31-year-old New England Patriots wide receiver welcomed their first child together, a son.

"My life has always been a combination of different chapters and different seasons. My last chapter was the beginning of a new season," Cardi captioned a video of herself lip synching to her song "Hello."

"I brought new music and a new album to the world! A new baby into my world, and one more reason to be the best version of me, one more reason to love me more than anything else or anyone else so I can continue giving my babies the love and life they deserve," she continued. "This next chapter is Me vs. Me! It’s me against all odds me against everything meant to get in my way."

The baby was born weeks before Diggs' 32nd birthday. The baby boy is the "WAP" rapper's fourth child.