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.

Cardi gave a little more insight in her Instagram story when she shared a video of two floral pink strollers and exclaimed, "I just had a boy; I love this stroller!"

USA TODAY has reached out to Cardi and Diggs' reps for comment.

In September, Cardi released her second album, "Am I the Drama," and revealed she will embark on her biggest tour yet in 2026.

Cardi B confirmed her relationship with Diggs in a PDA-filled Instagram post in June, which showed the lovebirds cuddling together on a yacht.

In September, the rapper opened up about her pregnancy and relationship with Diggs in an interview with "CBS Mornings" host Gayle King.

"I feel like I'm in a good space. I feel very strong. I feel very powerful that I'm doing all this work," Cardi told King. "But I'm doing all this work while I'm creating a baby, and me and my man, we're very supportive of each other."

Cardi's romance with Diggs follows a highly publicized and tumultuous breakup with her ex and father of her three children, rapper Offset. The former couple share daughters Kulture and Blossom and son Wave.

Contributing: Taijuan Moorman, USA TODAY

This article originally appeared on USA TODAY: Cardi B reveals birth of baby boy, her first with boyfriend Stefon Diggs

Reporting by KiMi Robinson, USA TODAY / USA TODAY

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