Are there sure ways to get rid of this extra skin on my lower stomach from having a baby?

Lose weight: There may be two factors for the extra 'skin' on your belly. Excess of fat and some stretching which occurs during pregnancy. The best solution is to exercise and make your abdominal muscles stronger. In addition, you should cut down on fats in your food, eat healthy food, low on calories. This will get rid of some of the fat which tends to accumulate on the belly first and we all have some.

Diet & Exercise: The key to more things with weight is diet and exercise. There are some issues with excess skin after a baby and stretch marks but firming abdominal muscles usually help. Other treatment modalities could be asked at a plastic surgeons office but that would more than likely require surgery.