Andrea Constand, the woman whose sexual assault allegations led to Bill Cosby's conviction in April, has broken her silence about that encounter for the first time in 13 years to NBC News. 

Constand spoke about the 2004 incident for the first time outside the courtroom to Kate Snow for an episode of “Dateline.” 

“I was crying out inside, in my throat, in my mind, for this to stop," she said of the moments after she was drugged by Cosby. "And I couldn't do anything."

Constand said Cosby gave her pills at his estate near Philadelphia, where she sought career advice while serving as operations manager for Temple University's women's basketball program.

"Three blue pills, and he put his hand out and I said, ‘What are those?’ And he said, ‘They'll help you relax,'" she recalled. "And I said, 'Are they natural? Are they, like, a herbal remedy?’ And he said, 'No, they're your friends. Just put them down.' I trusted that they would maybe just help me feel a little more relaxed."

She says the pills made her go in and out of consciousness. And that she was helpless to fight back as Cosby sexually assaulted her.

“My mind is saying, ‘Move your hands. Kick. Can you do anything? I don't want this. Why is this person doing this?’ And me not being able to react in any specific way," she said. “So I was limp. I was a limp noodle.”

Constand's mother, Gianna, sat next to her daughter during the interview, which airs Friday at 10 p.m. ET. 

Cosby was found guilty on three counts of sexual assault on April 26. He will be sentenced in late September. 

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