Catelynn Lowell is getting anxious about the arrival of her second child.

'Teen Mom' Catelynn Lowell Announces The Arrival Of Her 'Little Girl'

As her due date approaches, the Teen Mom star is getting excited, and sharing pregnancy updates with fans. Most recently, Lowell told her fans of her frustration with still being pregnant.

"Can't wait to just have my baby here! Sooo done being pregnant lol," she wrote on Tuesday. The following day, it was off to her 37-week doctor's appointment. As she told fans the night before, "Goodnight world got a doctors appointment tomorrow #37weeks #andcounting."

'Teen Mom' Stars Catelynn Lowell & Tyler Baltierra Dish On Their New Tell-All Book

Lowell and Baltierra announced their second pregnancy in August. Their first pregnancy, for which the couple chose adoption, aired on the first season of MTV's 16 & Pregnant.

For the last couple of months, Lowell and Baltierra have been filming season 5 of Teen Mom, alongside Maci Bookout, Ryan Edwards, Amber Portwood and Gary Shirley. In addition to sharing their latest pregnancy with fans, Lowell and Baltierra will also give fans an inside look at the planning for their spring 2015 wedding.

Over the weekend, Baltierra shared a sweet message to Lowell on Instagram, which read, "She's the best thing that has ever happened to me. She's everything I want that I never knew I needed. She's the most selfless, kind hearted woman that I'm lucky enough to call mine."

Teen Mom season 5 will premiere on MTV in 2015.