Could Catelynn Lowell have lost a child before she entered an Arizona treatment center for Thoughts Of Suicide? According to a new report, a sneak peek at an upcoming episode of "Teen Mom OG" showed Lowell's daughter, three-year-old Nova, sporting a "big sister" shirt and now, fans are convinced that Lowell may have suffered a miscarriage before considering ways to kill herself in November of last year.

In a sneak peek at Monday night's upcoming episode of "Teen Mom OG" season seven, Catelynn Lowell tells her husband of two years, Tyler Baltierra, that their daughter will soon be a big sister.

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That said, Lowell and Baltierra never publicly acknowledged the pregnancy off-screen. So, did the pregnancy never actually happen, or did Lowell conceive a child [VIDEO] and then suffer a miscarriage? Unfortunately, Lowell and Baltierra haven't said either way and it is unclear how much will be seen on the remaining episodes of the MTV series.

Report claims Catelynn Lowell was pregnant in 2017

Although Lowry and Tyler Baltierra have remained silent in regard to the alleged miscarriage she experienced, a source told The Ashley's Reality Roundup earlier this week that Lowell had surprised her husband and their daughter last year with the news of her pregnancy. Then, the outlet revealed, Lowell suffered a tragic miscarriage and went to treatment shortly thereafter after confirming her thoughts of suicide with her online audience on Twitter in November. The outlet then said that while the MTV crew believed the reality star was around six weeks pregnant, no one was 100 percent sure about the timeline of her pregnancy.

Catelynn Lowell is dedicated to getting well

After entering the Arizona rehab center for the third time earlier this month, Radar Online's source said that the longtime reality star was determined to get her mental health back to 100 percent before she makes plans to return home to her family.

After all, her thoughts of suicide were reportedly quite strong before Catelynn Lowell decided to seek help. “It’s going to take more than a few weeks of therapy to help her recover," the source said.

To see more of Catelynn Lowell, her family, and her co-stars, including Tyler Baltierra and their daughter, three-year-old Novalee Reign, don't miss new episodes of "Teen Mom OG" season seven on Monday nights on MTV at 9 p.m. The show also stars Farrah Abraham, Andrew Glennon, Amber Portwood, Gary Shirley, Ryan Edwards, and Maci Bookout.