I havent been eating nothing since days...yet i havent reduce my weight .. ramadan?

If you don't eat food for a few days, your body begins to compensate by storing all of your extra energy into fat, because it thinks that you are starving. That is why you didn't lose weight, and also why you got dizzy, because you don't have any extra energy. Starvation diets do not work because of this, it is better to eat balanced meals multiple times a day in order to replace fat you burn with muscle.