Ketones .. confused

I am eating very low/no carbs at the moment but am not losing any weight at all. I have just bought some Ketostix from Boots where you would think I had asked for crack cocaine and they nearly didn't sell them to me :shock: . I have tested with ketostix and the reading was 1.5 mmol/L. Is this good or bad, any ideas why my weight is staying the same? I'm also very tired at the moment and am sleeping 12 hours a night no problem.

Sorry if that is a bit of a jumble of questions but am in the dark about ketones :|

I tested for ketones to see why I am not losing weight and wondered if my diet was not working the way it should as others seem to lose.