Actress Lindsay Lohan made a shocking revelation during the finale of her documentary series.

During Sunday's two-hour finale of "Lindsay," the OWN cable channel series, the "Mean Girls" actress revealed that she had suffered a miscarriage during the taping of her reality TV series, the New York Daily News reported.

When asked to give her take on her experience on the show, the 27-year-old actress revealed that her miscarriage prevented her from appearing on the program at one point. She claimed that she was sick and unable to move.

"No one knows this - I had a miscarriage for those weeks that I took off," Lohan said. "It's a very long story but that's why on the show when it says, 'she doesn't want to come down, she doesn't want to come down.' I couldn't move. I was sick. And mentally that messes with you."

Lohan did not give any further information about the alleged pregnancy. She did not name the child's father or mention how far along in the pregnancy she was at the time of the miscarriage. Before starting to cry, Lohan continued to talk about her experience on the show.

"Watching this series, I just know how I felt at that moment and I can relate to that girl, which sounds kind of crazy," she continued. "I'm like, 'oh my god, this is really sad. Who's helping her?' No one knows what's going on in my head at every second because I'm constantly thinking. My mind does not shut off."

Lohan began taping the OWN reality show shortly after leaving her sixth stint in rehab last summer. After pulling herself together, Lohan added that she was looking forward to shooting a new movie in June stating, "I'm happy. The biggest thing I learned from his experience and doing this show is my work ethic is different. I have that fire back in me."