Lower belly fat! Help!?

I'm 13 qnd im only 5"1/2 weighing 84 pounds(male) I've always been sort of skinny and short. When I flex my stomach, looking down at it is gross. Haha. I have a little bit of fat on my lower abs Which is getting in the way of havin some shmexy abs. Looking in the mirror it doesn't look bad at all, but looking from the side you can see my stomach curve so it's bigger at the bottom. It's summer and I'm trying to get rid of this within 2-4 weeks. I also want more definition for my abs so tips on that are appreciated. I can email a pic for a better visual.