Catelynn Lowell Pregnant 2014: 'Teen Mom' Shares Baby Bump Photo, Films With Fiance

Catelynn Lowell is pregnant and filming.

On Wednesday, after months of speculation, Lowell confirmed she and her fiance, Tyler Baltierra, were expecting their second child together later this year.

"#it'sofficial #4months @tylerbaltierramtv," Lowell wrote on Instagram, along with the first photo of the her baby bump. Baltierra shared the photo, as well.

In April 2014, Lowell and Baltierra spoke of their plans for a second child (they chose adoption for their first child, daughter Carly) during an interview with In Touch Weekly.

“I would’ve felt guilty if I got pregnant again when Carly was 1 or 2. But we’ve both been yearning for this,” the Teen Mom star explained to the magazine. “We’re ready to have a baby!”

Lowell and Baltierra were seen choosing adoption for Carly, now 5, during their stint on MTV's 16 & Pregnant, and throughout Teen Mom, their journey of adoption, including their yearly visits, was chronicled.

Last week, Baltierra confirmed he and Lowell were filming with MTV by sharing a photo of himself holding a videocamera. In the caption of the photo, he wrote, "#MTVSwag."

Also this week, it was reported that Amber Portwood and her child's father, Gary Shirley, were filming with MTV. According to Radar Online, the former couple were seen filming a dramatic moment at their daughter's first day of kindergarten.

“Gary and Amber seemed to be having a heated conversation near the car,” an onlooker told Radar. “Amber had her arm crossed. She definitely didn’t look happy.”