A great article from Amy Berger on being in Ketosis vs. being Fat-Adapted, this should answer your questions:
http://www.tuitnutrition.com/2017/0...ng-ketones.html

Also, since you started 2 weeks ago, understand there is a common pattern to weight loss. After the initial water weight loss, there is usually a slow down in scale weight loss, but instead you have Fat Loss which is what you want. Good explanation of common patterns here: https://forum.lowcarber.org/showthread.php?t=365499

You are doing great, don't worry about the scale.