They don't tell you when you are judged, however they do come in person to judge. I think it was either Saturday or Sunday night when VMK_Annie came to JediViper's room while I was in it to judge. The only reason I knew she was judging was because I was in her room earlier that day when she said she was shutting down so that she could go judging guest rooms.
So, maybe you have been judged and you didn't know it. Also I don't think that being judged one week eliminates you from being judged after that. So, if you don't win this week, you might very well win next week.