HELP!! I want to lose the belly "thing"?!

when i got pregnant I weighed 98lbs!. when i had her i weighed 198lbs!. 98 is too little (i was way under weight)!. I have lost a lot of the weight!. At least to a healthy level, but i have loose skin on my belly!. No matter what i've done or do i can't get it to "shrink" back! It drives me crazy!!!! I drink only water, run and walk on a treadmill and elliptical, and do yoga/Pilate's 5-7 days a week!. I watch what I eat and eat healthy, but it doesn't help!.
Does anyone know how I can lose this thing!?!?!?!? Please help!?!Www@Answer-Health@Com

---

---