Turbo slim and Whey protein? & Any success stories?

I'm really excited to start turbo jam tomorrow and I'm doing the turbo slim meal plan program as well. It says that I need "beachbodys" whey protein and it says that I need to have a shake a day. Doesn't whey put weight on? TurboSlim says that you can lose up to 10 pounds and 10 inches in 10 days. So Idk I just had a baby and weigh 175 I don't need more weight? What will whey do? And can I just get a different bran of whey protein from target? Any one have success stories with turbo slim?