Have you kept going past the 5 - 10 pounds? It's doubtful that you'll continue to shed weight at that rate. What happens is that without carbs your body's glycogen stores begin to deplete when you stops eating carbs (carbs are essential to glycogen production). Your muscles will take a week or two to flush out all the fluid they were holding on to before eventually stabilizing at a new level. Most people tend to drop a lot of weight at the beginning of a diet, especially low or no carb, however once the initial glycogen depletion happens they level off with the weight loss.

Some people hit a plateau and get discouraged or think they're done and start eating carbs again and shoot right back up. Others continue on at a healthy 1 - 2 pounds/week until they reach their goal.