Door won't close
I'm new but I had a general question. I went to bed last night shut the bedroom door. When I awoke this morning it was cracked. Freaked me out because I live alone. I searched my place thoroughly and no one was there. I tried closing the door but it wouldn't close. There are no obvious obstructions or anything getting caught up in the door and the hard ware seems OK. What could be causing it then?