Fergie has spoken about her crystal meth addiction in the past, but she recently spoke about the hallucinations the drug caused her.

FERGIE OPENS UP ABOUT PAST METH ADDICTION

The singer, 42, was addicted to meth in her days prior to joining the Black Eyed Peas. “At my lowest point, I was [suffering from] chemically induced psychosis and dementia,” she explained to the British website iNews.co.uk. “I was hallucinating on a daily basis. It took a year after getting off that drug for the chemicals in my brain to settle so that I stopped seeing things. I’d just be sitting there, seeing a random bee or bunny.”

Some of the hallucinations became so real that she was convinced that the CIA, FBI, and SWAT teams were following her. She described one instance when she was leaving church one day: “I remember thinking, ‘If I walk outside, and the SWAT team’s out there, I was right all along. But if they’re not out there, then it’s the drugs making me see things and I’m going to end up in an institution. And if it really is the drugs, I don’t want to live my life like this any more, anyway,'” she said. “Obviously there was no SWAT team, it was just me in a parking lot. It was a freeing moment.”

“The drugs thing, it was a hell of a lot of fun… until it wasn’t. But you know what, I thank the day it happened to me. Because that’s my strength, my faith, my hope for something better,” she said.

Fergie is currently in divorce proceedings with her estranged husband John Duhamel, 45. They were married for eight years and are parents to 4-year-old Axl. “Thank the Lord for FaceTime,” she in her interview of her divorce. “Because both Josh and I are working full-time right now. It gets tough and we get tired, but we’re trying our hardest to make sure that kid feels nothing but love. We wanted to find our footing with our separation before we announced it publicly – to make sure we got it together for our kid,” she said. “I’m super-proud of [Josh]. He just wrote and directed a movie called The Buddy Games – his first directing job – so now he’s in the editing bay.”

Fergie is currently promoting her first solo album in 11 years, Double Dutchess, which came out in September. She is also set to host new Fox musical competition show The Four, premiering on Jan. 4.