I have also not lost any weight for 2 weeks, which I am freaking out about, but I went for my 6 weeks yesterday, and talked to Kelly, and she asked how many clothes sizes I've lost in the last two months. I said 2 she said you're doing fine. So instead of weighing yourself all the time start taking measurements also to see how many inches you have lost. I do it once a week, and this week I lost 2 1/2 inches in my waist.
Not to shabby for not loosing any weight in two weeks.