I mined about 32,000 coins and when POS first started I was getting a block or two per day.  Then the auction hit and all of the coins that matured after the auction slowed me down to a block or so per week.

You don't have many coins (neither do I really) and with a little bad luck it could take months for you to see something.  I can go for a week or more, then one day I get two blocks (200 coins).  Hard to say how it all works out as far as predictability goes.