“Teen Mom” will have a new cast member when it returns to MTV for Season 5 in 2015. Maci Bookout, one of the MTV reality-TV series' leads, confirmed she is pregnant with her second child Monday.

Six years after welcoming her first son, Bentley, with ex-fiancé Ryan Edwards on “16 and Pregnant,” Maci is expecting her second baby with her boyfriend of over two years, 25-year-old motocross racer Taylor McKinney. According to InTouch Weekly via the Daily Mail, Maci, 23, is 16 weeks pregnant with a baby girl. She is due in June 2015.

While Maci called the pregnancy a “huge shock” due to her polycystic ovary syndrome condition, she said she is excited to be welcoming a child with Taylor. “I knew my chances of getting pregnant were very low… This baby is such a blessing. I’m calling her my miracle baby,” she said.

Despite her fears she may be "judged" for having another child, Maci said he is thrilled to be having a baby with Taylor following her tumultuous on-screen relationship with Bentley’s dad, Ryan. “Last time, there was a lot of worry and concern. It was just me and Bentley facing the world together and I had to figure things out as I went. This time, I’m able to be excited because I’m older and able to give my baby the stability of the relationship that Taylor and I have," she said.

The pregnancy confirmation comes on the heels of a report from Teen Mom Junkies  speculating that Maci was “3 to 4 months along” along. Maci’s recent Instagram posts also added fuel to the pregnancy rumors. While the MTV star was usually quick to show off her physique on social media, as Teen Mom Junkies pointed out, she has not posted anything but photos from the shoulders up in the past two months.

While Maci and Taylor will have to wait until the summer to hold their new baby, they appear to already have their hands full. Not only do they have Bentley to care for, their Instagram pages indicate they have also recently welcomed a new puppy, named Bonnie, into their family. “Puppy love,” Taylor posted Saturday alongside a photo of the couple’s new pet.

Maci has expressed interest in having more children on previous seasons of “Teen Mom.” In September, InTouch Weekly reported that she wanted to marry and have multiple children with her motocross beau. “They’re hoping to have two or three kids together eventually,” a source said. “She can’t wait to grow her family with him.”