I'm in edmonton. I had a dating scan at 7w4d because I wasn't sure of my last period and wasn't going to be able to get in with an doctor right away so I talked to a medicenter doctor and explained that and he did the paperwork for me to get one.
I also had one at 12 weeks because I ended up in the emergency room bleeding, clearly no fun

but baby was good
I had an anatomy scan (3D) at 19w4d and they saw a
almost everything they needed to just not enough of the face so I talked my doctor into letting me have another one. So I go in on the 10th of April and then I have to wait for the real thing.
There is a place in Calgary that does private ones
http://www.uc-baby.com/en/locations/index.php
Prices - not too bad.
http://www.uc-baby.com/en/services/packages-prices.php
Don't know how well it would turn out that early though when I talked to the tech they said 3d is best done (best pictures) between 24 and 32 weeks.
Good luck