How can I loose the fat at the bottom of my stomach?

I had a baby almost two years ago but the lower stomach fat has never went away. I only weigh about 118 and im about 5"7. Im actually pretty skinny except my stomach pokes out at the bottom and I look pregnant because I am so skinny. How can I loose that little bit of fat in my stomach? Exercising doesnt work. i dont want to lose weight every where. Just in my lower stomach right underneath my belly button.