I don't know what to do

I'm so scared right now. I don't know what to do. I woke up this morning, my father gone. And I don't know when he will come home. I can't take any pn medication, because my father hid the key. I'm just so anxious and terrified. I just wish he would come home. I'm sitting, banging my head into the wall. I don't know what to do.