The Teen Mom 2 star welcomed her fourth child on July 30


Kailyn Lowry revealed her newborn son's name on Monday — more than one week after welcoming the little one.

Lowry announced the name on Instagram: Creed. She explained that it means "guiding principle."

On Thursday, Lowry teased possible baby monikers on her Instagram Story, saying her sons Isaac and Lincoln were torn between two names.

"Isaac wants to name the baby Jason," she wrote. "Linc wants to name the baby Austin."

The Teen Mom 2 star, 28, welcomed her fourth child on July 30, PEOPLE confirmed.

The baby boy was born weighing 8 lbs., 15 oz. and 22.5 inches long, according to E! Online. The reality star's son arrived at 2:47 p.m. at home.

The little one joins big brothers Isaac Elliot, 10, Lincoln Marshall, 6, and Lux Russell, 2. (Lowry shares Isaac with ex Jo Rivera; Lincoln with ex Javi Marroquin; and Lux with ex Chris Lopez. Lopez is also her newborn son's father.)

Lowry first announced her pregnancy in February, sharing a photo of herself holding her sonogram photos while surrounded by her children.

“We’re confirming the news, baby #4 is coming soon!” she captioned the post. “I’m almost 16 weeks pregnant & it’s been a rough few months this time around. I've had nausea, morning sickness, and absolutely no energy. 😭 This week I’m starting to feel a bit better and I'm really hoping it stays this way!?"