After hinting at embarking on a change in her life after recently ringing in her 30th year, things have taken a distinctly anti-celebratory turn for LeAnn Rimes, who revealed that she is checking into a treatment facility.

After Tuesday, Rimes, who has been married to Playboy Club and Sunset Beach's Eddie Cibrian, 39, for just over a year, following her very public split from dancer Dean Sheremet, 31, wrote about the events of her birthday on her website. "30….it feels so different yet no different at all," Rimes wrote. "I had a wonderful day full of peace with my friend's and family. I'm so happy to have arrived here. It's a true time of reflection and healing, exactly what I'm going to do."

Rimes checked into a treatment facility on Wednesday, the day after her birthday. "LeAnn has voluntarily entered a 30 day in-patient treatment facility to cope with anxiety and stress," her rep, Marcel Pariseau, told People. "While there will be speculation regarding her treatment, she is simply there to learn and develop coping mechanisms. While privacy isn't expected, it's certainly appreciated."

The rep also claims that, despite speculation about Rimes' slight frame, her treatment has nothing to do with an eating disorder or substance abuse.

Cibrian, who also separated from his wife of eight years, former model Brandi Glanville, with whom he has two sons, Mason Edward, 9, and Jake Austin, 5, is reportedly behind Rimes all the way. "My wife is the most remarkable and courageous woman I know," he said. "I am so proud of her for having the strength to finally take some time for herself. I will be with her every step of the way."

Rimes is looking forward to her time away. "This is just a time for me to emotionally check out for a second and take care of myself and come back in 30 days and be the best 30-year-old woman I can be," she said.

For more on LeAnn Rimes and Eddie Cibrian:

Eddie Cibrian Injured On Set Of Canceled Playboy Club

PHOTO: LeAnn Rimes Dresses Down In A Bikini For 30th Birthday

Eddie Cibrian And LeAnn Rimes Wed

LeAnn Rimes And Eddie Cibrian Engaged

Eddie Cibrian Moves In With LeAnn Rimes

PHOTO: Eddie Cibrian 'Proposes' To LeAnn Rimes

LeAnn Rimes Comes Clean About Cheating

LeAnn Rimes Files For Divorce