Catbakkorrel,
You lost 5kg in one week, then 2.5? You are DEFINETELY doing A LOT of things wrong. You probably lost 90% of that on fluids, vitamins, minerals, some muscle, etc, and only 10% fat. And now, since your body cannot dispose of any more nutrients, you are stuck on the same weight.
You don't want to loose WEIGHT. You want to loose FAT. In order to do that you need to accelerate your methabolism to break the barrier that keeps your body from burning fat. To do that, you should eat one meal every 2,5 hours (with HEALTHY food, that is cooked meat, potatoes, SPAM, yam, fruits, veggies, egg whites, just as long as your meal has protein, carbs and little fat), and walk 50 mins straight once or twice a day EVERYDAY. And DO NOT walk more than 1 hour straight, or you will begin to burn muscle too.
I recommend EVERYONE to read the book called "Burn the Fat, Feed the Muscle". Go look for it on the internet, google it. You might even find it for free if you know how to look.
Good luck
