Teen Mom 2's Chelsea Houska Credit: MTV

Oh baby, baby! Pregnant Teen Mom 2 star Chelsea Houska took to Twitter on Monday, July 18, to share her excitement over hearing her unborn child’s heartbeat for the first time.

“I was able to find baby's heartbeat with the Doppler for the first time today,” the 24-year-old MTV personality, who is pregnant and expecting her first child with fiancé Cole DeBoer, wrote. “I cannot handle it! I want to listen all day!”

Although she is thrilled about becoming a second-time mom, the 16 and Pregnant alum — who welcomed daughter Aubree, 6, in September 2009 with ex Adam Lind — feels a bit anxious about carrying her latest bundle of joy.

When one of her followers recently asked Houska if she feels better prepared for baby No. 2, the South Dakota resident responded by writing, “I feel more nervous for some reason! It’s been a while and I want to do everything perfect. #deboerbaby.”

Nerves aside, the expectant reality star is looking forward to expanding her family.

“We’re really excited, and Aubree is pumped to be a big sister,” Houska told MTV News on July 12. DeBoer, who has taken on a larger role in Houska’s daughter’s life since the couple moved in together last year, gushed, "I'm a proud dad of one already, so adding another to the family is just amazing."

As previously reported, Houska announced her pregnancy via Instagram and her brand-new personal website on July 12.

“Oh my gosh! I’m so excited to finally be launching my website, and I felt like the perfect first post … would be to announce to everyone that baby DeBoer is expected in February 2017!” she wrote on her site. “We are beyond excited for this journey and can’t wait to share it with you all! Big sister Aubree is also extremely excited, and it’s no secret that she is hoping for a girl haha.”

The couple — who met each other at a gas station in 2014 — got engaged in November 2015 after nearly a year of dating. While they plan to tie the knot later this year, Houska’s father, Randy, revealed that his daughter is barring MTV from filming her upcoming nuptials.

“Chelsea’s getting married in October … she drew the line [on filming the wedding],” the dentist explained during a Friday, June 24, appearance on the podcast Dentists, Implants and Worms. “She won’t let them tape it. That was a lot of fighting back and forth. They certainly wanted it.”

While the network offered to pay for the ceremony, Houska still said no. “She doesn’t want it taped; she doesn’t want it on TV,” he added. “She doesn’t need it paid for. I was very proud that she grew the balls to say no. They’ll go to the bachelorette party and stuff [to film], but for the wedding she agreed that she’ll send a bunch of professional still photos [to them to use for the show].”

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