CBSAmber Portwood is coming clean about her past drug use.
The Teen Mom star spoke to Dr. Phil in an exclusive interview since her release from prison last month. The appearance will air on Friday, Dec. 20.
"This is actually my first time on stage sober, so I'm really nervous," Portwood revealed. "Every time you see me on that show [Teen Mom], I am high," she added.
The MTV reality star went on to explain that she abused the drug Fentanyl while she was in rehab.
"I'm not going to give anyone any ideas, but let's just say you can, it doesn't show up unless you send it to a lab," Portwood told Dr. Phil. "It's patches. It's really dangerous. I opened up the patch and I would eat the patch. It's like a three-day patch. It's very dangerous, and I, um, I was using that the whole time I was in there. With a friend, or whatever she was."
She also admitted that she was high while on house arrest and when she beat up her then-boyfriend Gary Shirley.
Shirley and Portwood are parents to daughter Leah.
Portwood had been serving a five-year sentence as a result of her arrest on drug possession charges in December 2011.
The 23-year-old was seen leaving Indiana's Rockville Correctional Facility on Nov. 4 and appeared thrilled to reunite with her family and close friends.
So was the single mother released early? Not entirely.
While she did only spend less than two years behind bars, Indiana allows a defendant to earn "good time credit" for every day that the inmate participates in programs and exhibits good behavior.
According to the jail's spokesperson, Portwood participated in a substance abuse program and earned credits for her good behavior during her incarceration.