BFing has helped me lose weight I'm sure. I have done no exercise and have been eating like a horse! I eat healthy meals though but do also have a few naughty snacks!

Normal pre-baby weight = 51-52 kgs
Weight at conception = 49 kgs
End of pregnancy = 66 kgs
Day 4 post birth = 61 kgs
1 week after birth = 58 kgs
4 weeks after birth = 55 kgs
4 months after birth = 51-52 kgs
7 months after birth = 48-49 kgs

I fit into my pre-pregnancy jeans about 2 weeks after the birth.