I have a seven-week old baby who has breastfed since she was born. At the beginning we had to supplement with formula but she has been breastfeeding almost exclusively for two weeks. Now, all of a sudden, I have no milk supply. She suckles for a few minutes, and, finding no milk, she starts crying hungrily. She looks for the breast, starts suckling eagerly, and then stops, frustrated. I feel no let down and my breasts no longer leak. How can I increase my supply if she refuses to suckle once she finds no milk? Could this loss have been caused by hormones (I've started having what seems like a period). I definitely don't want to stop breastfeeding so soon but I don't know what I can do. Help!!!