Congratulations on a great start to your diet and exercise program! Losing 6 pounds in your first two weeks is fantastic

Sure, some of it will be water, but that's normal. Part of it is fat loss, too. It's normal to lose a little more when you start out because part of it is water. Also, most women lose more per week when they are at their highest weight and it tapers off as you get closer to goal. I think you are off to a great start