Hey bro, apparently, medicals are not mandatory. So if the Canadian Embassy are satisfied with all the documents you have provided and everything seems to be in order, they'll directly request you to submit your passport. How long it takes them to do that mainly depends on your nationality and where you're applying from.
I'm a Pakistani study permit applicant and I also applied online through CIC on November 7. I did my Biometrics on November 10 in the Abu Dhabi VFS VAC and I haven't yet received any updates on myCIC since my 'Biometrics were received'. I did, however, receive an e-mail yesterday which said that:
'Your application has been updated. Please sign in to your MyCIC account and check your application status and messages for more information.'
I logged in to myCIC and there has been no update on my application status there. So I am super confused as to what's happening! My classes start on January 7. You guys out there think I have a chance of getting my visa approved on time? Oh and how likely am I to be requested for a Medical?