What is a safe way to lose my pregnancy weight?

By breastfeeding: Strict dieting is not needed, as long as a breastfeeding woman eats only as many calories as needed to maintain her normal (pre-pregnant) weight. For example, if she was 120 pounds before pregnancy and is now 145 pounds, she should eat just enough for a 120 lb woman. Her 25 lb excess will be gradually used up in the production of breastmilk (25 ounces of breastmilk contains about 500 calories).

Balanced nutrition: If you eat a well balanced diet based on your pre-pregnant weight ( calorie wise) & simply breast feed, you can lose a pound every week or two.Make sure you are taking prenatal vitamins & plenty of fluids. The loss will be slow but natural. The books that say to up your calorie intake to bf are assuring that you won't lose weight.