I gained 40lbs with my daughter and lost it by day 9 post partum. Its also important not to lay around and be lazy you have to get right back into your usual routine.
Its different for every mommy it can take a couple months, after birth your body starts to recover slowly and bf is told to help quicker and it can you just got to be patient and also to help it more eating good :)
I lost it all ans ive been breast feeding for 2 months.
I feed my daughter for 1 year, i loset lots of weight in 4 months & by 6 months i was 49KG and i'm 164cm
I was 64 before getting pregnant ..
So i can till u it is really worth it lol
& it makes u'r baby had less chances of being sick alot..