Does Catelynn Lowell have a little bun in the oven?!

After the Teen Mom OG star shared a new Instagram photo alongside Maci Bookout and Taylor McKinney, fans immediately suspected Catelynn was pregnant after she seemingly sported a tiny bump in the photo.

MORE: Catelynn Lowell and Tyler Baltierra Receive Backlash After 'Teen Mom OG' Airs Controversial Footage of Novalee

"Omg you're pregnant!" said one follower.

"Is this saying you're pregnant again???" added another.

Cate shares daughter Novalee with husband Tyler Baltierra. Recently, the reality star revealed she wanted another baby, but insisted she wasn't expecting after responding to a fan via Twitter.

Scroll through to see what the ladies of Teen Mom looked like on 16 & Pregnant vs. today!