I'm hearing voices!!! help me!?

Ok, so i woke up today and i heard two voices speaking in a demonic voice that was mumbling and laughing. I'm not very religious by the way. So they kept on laughing and it was coming from inside the room. I was soo afraid... they told me to slit peoples throats. i hid under the sheets and when my mom came home from work they left me alone.. what was that?? i searched my room and no one was found or anything..