The actress, who was married to Parker Stevenson at the time, admits that she was bewildered when her doctor broke the tragic news to her.
She recalls in her new memoirs, The Art Of Men, ""I thought, 'How is this gonna... What's happening?' It was so confusing and Parker wasn't there.
""When you've carried a baby for three or four months, you have their whole life planned out; you know where they're going to school... you know what their room looks like... you're just so joyous. It's just like all the life falls out of you.""
Thankfully, Alley had her Cheers castmates to support her as she attempted to bounce back from the tragedy.
She tells U.S. news show Entertainment Tonight, ""I was surrounded by the Cheers people. Rhea Perlman was a huge help to me... The whole cast just embraced me.""