Rep. Alexandria Ocasio-Cortez took to Instagram on Monday night to speak about never-before-shared details of her experience as a survivor of sexual assault.

"I'm a survivor of sexual assault," Ocasio-Cortez said during an Instagram Live appearance in which she also disclosed details about her experience during the U.S. Capitol siege last month.

"I haven't told many people in my life," she added.

In the days after the Capitol insurrection, Ocasio-Cortez made media appearances where she shared some details of her experience that day, but she had stopped short of giving a specific recount of the incident, citing security concerns.

On Monday night, speaking to her Instagram followers, she said she feared for her life and believed she would be killed. She described taking shelter in a bathroom when a man screaming "where is she" entered her office.

"I thought I was going to die," Ocasio-Cortez said. "And I had a lot of thoughts, you have a lot of thoughts when you're in a situation like that. I have never been quieter in my entire life."

According to Ocasio-Cortez, the man who entered her office was a Capitol Police officer who then directed her to take shelter in another building along with Rep. Katie Porter of California.

As she spoke about her experience as a survivor of sexual assault, Ocasio-Cortez also addressed comments by some Republican lawmakers who have suggested it's time to "move on" from the January 6 attack. She did not share details of her experience but spoke about the compounding trauma of the events.

"The reason I'm getting emotional in this moment is because these folks who tell us to move on, these are the same tactics of abusers," Ocasio-Cortez. "There's no, something really big happens to you — and then you deal with and you move on, and then something else happens to you, you deal with that."

Ocasio-Cortez is a Democrat whose districts includes parts of Queens and the Bronx. She is considered an influential voice in local and national politics and has risen to prominence in recent years as a darling of the party's left flank.

In recent days, Ocasio-Cortez has been called on to apologize to U.S. Sen. Ted Cruz after she tweeted he "almost had me murdered” during the January 6 riot.

She has been critical of lawmakers who have said some have made "too big a deal over" the breach.

“We cannot move on without accountability,” Ocasio-Cortez said. “We cannot heal without accountability. All these people telling us to move on are doing so at their own convenience.”