Waiting for travel documents after fingerprint

[IrfanP]

Hi, I was waiting for my travel document (I-131) because I'm going to travel next dec 12'2014. My application accepted in August 22'2014 and done my biometric in September 26'2014. How long does it take to get the travel document in my hand? I check my status in the USCIS website and it still on "acceptance" til today. I'm worried now that I can't get it on time before I leave.
Thank you.