Why does my upcoming story go up and down in the queue?
The number of stories in review each week depends on several factors and the admins are constantly re-arranging the queues, right until the last moment.
The factors that influence how many stories are reviewed are, for example: How many critiques were submitted in the previous crit-period in a particular queue, how many stories are in the Newbie queue and how many stories are upcoming. We don't want a queue to be empty so that comes into account.
So be prepared for your story to be bumped up or down.