Yes, contact them immediately. The exact same thing happened to me. Having completely everyone else's secondary, Finch was the only one that hadn't sent one. I eMailed them and two days later I receive this response:
Your application with us has not yet been processed. We realize that you did submit your application in June, but Amcas did not forward your application to us until recently. We are processing applications in the order that we received them from Amcas. You will be processed shortly and a secondary application will be sent to you by mail ...
That was sent 11/5, and I received their secondary 11/10. First, I hate AMCAS. Second, I want to take legal action against AMCAS. Call Finch; I'm sure they will send you the secondary right away.