Actress Shannen Doherty on Tuesday revealed she has stage 4 cancer — three years after she went into remission in her battle with breast cancer.

The 48-year-old actress said she had been private about fighting the cancer for a year because she wanted to prove she was able to work.

“I don’t think that I’ve processed it,” she told “Good Morning America.” “It’s a bitter pill to swallow in a lot of ways. I definitely have days where I say, ‘Why me?’ And then I go, ‘Well, why not me? Who else besides me deserves this?’ None of us do.”

The “Beverly Hills 90210” alum said she only confided in a small group of people, which included co-star Brian Austin Green.

“I had moments of great anxiety where I thought, ‘I can’t really do this,’ and Brian was the one person who — of that group of people that knew — that I told, like, pretty quickly and said, ‘Here, the — this is what I’m dealing with,'” she said. “So prior to shooting he would always call me and say, ‘Listen, you know, whatever happens, I have your back.’ He would look at me and be like, ‘We got this, kiddo’… so Brian helped me through a lot.”