Actually, I've done further research... and it seems it depends on who is immigrating.
Check this out:
http://www.cic.gc.ca/english/pdf/kits/guides/3901e.pdfAlso region specific, it applies to the area that Vienna covers. If a spouse is being sponsored, then the medical is taken
before submitting the application as seen in the link I posted. If it's another member of the family class (parent, grandparent, children...), then it is
aftersubmitting, as seen in the link posted by ddunbar.
At least that's the way I understand it. I'm still trying to find out from Vienna which is valid in this case, but I believe the instructions in the link I posted override the ones in the link posted by ddunbar. I'm basing this partially on the fact that ddunbar's link says to mail the application in straight to Vienna, while all other instructions say that my application should be mailed to CIC in Canada, along with my husband's application to sponsor me.
Gah, this is all very confusing >_< Thank you for trying to help.