"I was sexually abused and physically growing up from the day I can remember till I was 14..when I finally had the courage to lock my door at night and sit by it," she wrote in an Instagram post. "All damn night."The "Famous In Love" star, 20, shared her story Sunday as celebs at the 75th Golden Globe Awards were promoting the #TimesUp movement, which calls for an end to sexual harassment and violence.Thorne said of the abuse that it was "Waiting for someone to take advantage of my life again.""Over and over I waited for it to stop and finally it did," she wrote. "But some of us aren't as lucky to get out alive. Please today stand up for every soul Mistreated."She also tweeted Sunday, "I never knew what was right or wrong growing up..I didn't know the person sneaking into my bed room at night was a bad person."The former Disney star did not name the person she says abused her. Fans immediately started offering their support, with some of them sharing their own stories of sexual abuse.On Monday Thorne posted a tearful Instastory video to thank everyone. "I'm on Twitter reading about all the people sharing sexual abuse stories with me from mine and I just want to say I'm really proud of all you guys," she said. "Stay strong, peace, I love you guys." It wasn't the first time the star had talked about abuse. In December Thorne tweeted, "Yeah I was," in response to another Twitter user saying they believed the actress had been molested.