Teen mom kailyn lowry baby 1 0

It's a Boy! All The
Details On 'Teen Mom
2' Star Kailyn Lowry's
Newest Addition,
Lincoln Marshall

And baby makes four!

Teen Mom 2 star Kailyn Lowry and husband Javi Marroquin became the proud parents of a bouncing baby boy on Saturday, Nov. 16 when little Lincoln Marshall Marroquin was born — and now a family friend is dishing details to In Touch about Lincoln's arrival to the world!

"Kail felt cramping around midnight (Friday night into Saturday) and by 3 a.m. She woke up and she knew she was in labor," the source revealed.  "She called the doctor and went into the hospital with contractions at 4-5 minutes apart at 4 a.m." 

EXCLUSIVE: See the First Shot of Lincoln and Isaac!

Lincoln was born at 4:28 p.m. weighing 8 lbs 6 oz. Despite being five days past her due date, the family friend revealed that, giving birth to Lincoln was "a much better experience" than with Isaac  — her 3-year-old son with ex-boyfriend Jo Rivera — even though she was in labor longer this time around.

"Only Javi was in the delivery room this time," the family friend told In Touch.  "He wanted it to be as private as possible with no MTV cameras." It was the proud dad who got to reveal little Lincoln's sex to Kail for the first time; the couple decided to keep the sex of the baby a secret — and Kail was so happy to learn she had another boy in the house!

Pregnant Teen Mom 2 Star Kailyn Lowry Says "I Do"!

"Everyone convinced Kail that she was having a girl, so when Javi said it was a boy she was so surprised," the family friend revealed. "Kail bawled her eyes out! Kail is definitely relived to finally be able to hold her baby." News of another boy was especially exciting for Isaac. "Isaac loves that he got a brother," the family friend told In Touch.