Haris your timeline looks similar to mine. I'm also from Pakistan, working in Saudi Arabia & my wife have sponsored me. My ECAS says application received on dec 2, 2016, processing started on jan 3, 2017 & medical results received. Somewhere in february i received additional document request which i submitted before deadline. But my wife haven't got any sponsorship approval or any acknowledgement that which visa office my file is transferred. We even have sumbitted everything upfront including PCC from both Pakistan & Saudi Arabia. How did your process went?