"It was quite a nasty time," the singer says of her three-week stay in a psychiatric clinic

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Lily Allen says she was so depressed after a miscarriage last year that she sought treatment at a mental health center.

Allen, 23, went to what she calls a “nuthouse,” a “psychiatric clinic,” according to an interview in the Daily Telegraph‘s magazine.

“I stayed there for three weeks. I was really depressed because of the miscarriage and I’d kind of lost the plot a bit. It was quite a nasty time,” she says.

But, she adds, “It was quite nice being in there. No one could get to me; no one knew I was there.”

She has since split from boyfriend Ed Simons, a musician with the Chemical Brothers. “Maybe if I had stayed pregnant and had the baby then things would have worked out between me and Ed,” she says. “I don’t know. You could drive yourself insane thinking about it.”