text: KEEP NURSING! I am a mother of two boys I lost all the baby weight after nursing for about 4 to 5 months. Which in my case was 30lbs! Weight loss varies from woman to woman. If you gained 150lbs during pregnancy Nursing alone will not cut it. You will definetly need to include excercise (a walk with the baby in the stroller)and change your eating habits. Nursing also makes your uterus contract which sometimes causes cramp like feelings (at least for me it did)this is your body returning to its regular shape and size, but keep at it and soon enough you will back to your old self. Nursing is good for the baby and it will help you lose the weight faster. Just eat healthy for you and your baby. Good luck