I was told oats help milk supply - you can even bake it and it is still effective so granola and not highly processed oatmeal balls and/or cookies would even count. As does staying hydrated. A good way to tell would be to visit a LC and have them weigh baby before a session and then after. A pump in the beginning will not give you a completely accurate view of what is in there since a baby is much more effective at getting the milk out than a pump. But you can use the pump to increase supply in between sessions.
Edited by Sol_y_Paz - 9/2/12 at 8:52am