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Megan Lowder, one of the houseguests in current season 19 of "Big Brother", has been noticeably missing since Thursday, June 28 episode, the second part of the series. With no clear explanation, her picture on the memory wall was faded to gray. However, now she has explained the reason behind her early exit, revealing that it has something to do with her post-traumatic stress disorder symptoms from previous sexual assault.

"When I was stationed in Norfolk, Virginia, I was sexually assaulted and I got really bad PTSD from it," the 28-year-old dog walker opened up to The Desert Sun on Friday, June 30. She went on saying that her PTSD was coming back after some of the other HGs confronted and yelled at her during the show. "So in the house... I had a lot of guys yelling at me and attacking me and it started really affecting me and making my anxiety severe and I was starting to get physically ill. I was throwing up, I had diarrhea, I was nauseous all the time."

In the Thursday episode, Josh Martinez verbally attacked her during the Head of Household competition. "I love everybody but you. And I want to make it very clear," Josh told Megan. He went on calling Megan "a snake" and "a bully."

Of Josh's verbal confrontation, Megan said in the interview, "I have no idea still to this day, [I] do not know why he went after me like that." Megan later added that "Cody did as well and Mark (Jansen), but Mark wasn't as bad."

Megan also clarified rumors surrounding her about why she left the show, including the one about her making a racist remark on the show. "I read a lot of the stuff that people were saying about me. I never made a racial comment," she claimed. [SPOILER ALERT!] In fact, it was revealed in Sunday, July 2 episode that Megan overheard fellow HG Jessica Graf calling Alex Ow "a panda." Alex, however, didn't believe Megan when she told her, leading to Megan getting yelled at again in the house before breaking down in the diary room.

"I could have heard wrong, it's entirely possible, but I was already talking to them about wanting to leave before that and so at that point I knew I couldn't handle it anymore and I went into the diary room where I started having a panic attack and they wound up taking me to the hospital a couple hours later," Megan explained in the interview.