ABC News June 7, 2017

Bill Cosby accuser Andrea Constand testifies for 7 hours in sexual assault case

WATCH: Bill Cosby accuser, accuser's mother takes the stand

Andrea Constand, the former Temple University employee who has accused Bill Cosby of drugging and sexually assaulting her in 2004, just completed seven hours of testimony over two days at the Norristown, Pennsylvania, court.

Constand acknowledged today that she had initially told police that the alleged sexual assault took place in March of 2004 and not two months earlier, as she testified Tuesday.

She also clarified that Cosby had called and invited her to his Pennsylvania house for dinner that night.

“Once you got hold of your phone records and realized you cannot have been passed out … the night you told police – you changed your story?” defense attorney Angela Agrusa asked.

Read: Bill Cosby accuser Andrea Constand tells jury she couldn't stop assault: 'I was frozen'

Constand said she "never got hold of my phone records" before speaking to police.

"I was just confused. I was mistaken," she told Montgomery County Assistant District Attorney Kristen Feden about those discrepancies.

As part of the prosecution's questioning yesterday, Feden asked an emotional Constand if she was able to refuse Cosby's advances after allegedly taking three blue pills given to her by the comedian.

"I wasn’t able to,” she said. “In my head I was trying to get my hands to move or my legs to move, but I was frozen and those [mental] messages didn’t get there and I was very limp, so I wasn’t able to fight him anyway. I wanted it to stop.”

Also taking the stand on Wednesday was Constand's mother, Gianna, who said Cosby told her over the phone in 2005 that his sexual encounter with her daughter a year earlier was consensual, but also apologized and said he was a “sick man.”

Both Constand and her mother were on the call with the comedian and he allegedly shared explicit details of their encounter, she said.

“I apologize to Andrea and I apologize to you," Gianna Constand said Cosby told her. “He told me stories about his personal life, he even told he was a sick man,” she added.

Cosby, 79, was charged in 2015 with felony aggravated indecent assault shortly before the statute of limitations on Constand's claim expired.

This is the first time that Cosby has been charged with a crime, though in recent years, he has been accused by more than 50 women of drugging and/or sexual misconduct. Cosby has repeatedly denied the claims. Only one other accuser, Kelly Johnson, was allowed to testify in this case. She took the stand Monday.

If convicted, Cosby faces up to 10 years in prison and a $25,000 fine.