Immigration Site

Hi, Im a F1 student married to a US citizen by naturalization. I started doing all the paperwork once my husband received his citizenship in January this year. My I-20 expires on May 30th 2011. I sent my complete package for green card through marriage (i-485, i-130, i864 together with i-131 and i-765) by Fedex to the Chicago location on March 30th, 2011. It was received and signed on March 31st, 2011. As of today, April 13th 2011, I havent received any email or text messages with notifications, and checks havent been cashed. I read in the forums that it usually takes one week to cash checks and receive emails.
Any suggestions of what I should do or what can be delaying the process?
Thank you