Party of four?!

After months of baby rumors, Catelynn Lowell and Tyler Baltierra seemingly confirmed what they’ve been hinting at for months: They're thinking about having a little sister or brother for their daughter Novalee!

They seemingly announced the news on Instagram, with Cate writing, "Proud to announce a new baby Baltierra," along with a sonogram.

However, she confirmed she's not actually pregnant after sharing a meme, explaining that she's "just kidding," but "would love one soon."

All this came after the Teen Mom OG stars took to Twitter on Tuesday, April 4 to share what seemed to be a cryptic pregnancy announcement.

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“Wahhh I’m ready for another baby, [Tyler Baltierra],” the 25-year-old wrote accompanied by a shocked emoji and a little family-of-four.

Just moments later, Cate’s hubby was quick to respond.

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“Me too babe,” he wrote with a little sad emoji.

The middle school sweethearts are no strangers to accusations of pregnancy. Just back in November, Catelynn fueled rumors that she had a bun in the oven when she posed alongside co-stars Maci Bookout and Taylor McKinney with what appeared to be a little baby bump.

The reality star duo have had babies on the brain for some time and even mentioned hopes to expand the family in a Facebook Q&A back in 2015.

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“If the next one is a boy, I’m done,” she said at the time. “If it’s not, then we’ll probably try for a third but I’m done after that.”

The couple have two children together already, seven-year-old Carly, who they placed for adoption when she was first born, and two-year-old Novalee.

And even amid reports of Tyler cheating and Catelynn’s recent stint in rehab, it seems the MTV stars are still holding strong!

Scroll through the gallery below to see Catelynn and Tyler’s cutest moments!