Not seeing results after 10 days of exercise?

[Peter]

I've been running for 10 days now and also doing pull ups, push ups, crunches, leg raises, jump squats, squats,calf raises,stretching and running like 1/2 mile a day or more. And i haven't lost any belly fat. im 14 and 5-3 and im 105 lbs i wanna loose belly fat to get six pack and i need to get ripped for basketball camp. So should i see results? anything i should do for more results? also my cousin is 14 and hes like 5 10 or so and hes 180 lbs and he needs to loose weigh overall hes been doing the same as me and he gained 7 pounds?!?! whats wrong ? how did that happen? 10 pts thank you very much sorry for the essay