My DD2 was a big (9 lb, 2 oz) and hungry baby. I EBF for 7 months, and lost 2 stone. And ate like a pig at the same time! It was fabulous!
Only problem was that I continued to eat like that once I stopped BF, and the weight went back on again. And now I'm a stone heavier than before I got pregant with DD2, and am trying very very hard to shift it again. But the chocolate habit has become very very ingrained.