"Teen Mom OG" star Amber Portwood is all set for baby number 2. Portwood announced her pregnancy via social media and that she and boyfriend Andrew Glennon are expecting a boy.

Portwood posted an image of a baby boy on Instagram with the caption, "Little baby Glennon is on his way!!" Portwood's second child is her first with the cinematographer. Fans of the television star quickly congratulated her and bid her good luck. One follower wrote, "Congrats girl! Boys are so much fun."

Another fan commented, "Congrats girl, I'm so happy for ya. I luv u for being so strong doing for u and boo boo." There were also comments from mothers who just found out themselves that they are having a boy, too.

Portwood and Glennon have not announced further information about her due date and their preferred name. The news came as a big surprise for her fans after the ordeal she had to endure earlier this year.

Baby Glennon will be the half-brother of Portwood's first child, Leah Leann Shirley. 

Portwood struggled in the first few months of 2017 after revealing that she is diagnosed with Borderline personality disorder and bipolar disorder. Portwood revealed her mental condition in a May episode of MTV's series "Teen Mom OG."

In episode 18 of season 6, Portwood stated that she is afraid of having more children due to her condition. "I just got re-diagnosed for Borderline Personality and Bipolar Disorder, and I've been taking three medications now that I need to take for the rest of my life," she said. The 27-year-old mom then explained that her condition and medication will hinder the possibility of her having another baby. "I can get pregnant, but it would mess up the fetus. If I do not have medication, I will not be normal. I would have... crazy mood swings," Portwood added.

During an interview with PeopleTV, Portwood said, "I'll be on medication for the rest of my life."