Sounds like you're doing great! good for you!
I too was lucky enough to get back to my pre-pregnancy size very quickly & walked out of the hospital 6 days after giving birth in my size 10 jeans...although i looked like i had no blood left in me!
breast feeding is great though, you burn loads of calories a day, you have to make sure you eat healthily & regularly, I would crave milky drinks and puddings when i breastfed, i would often eat a whole can of cold custard from the can!
