My ds is 8 months and I have stopped breast-feeding, more quickly than I intended only because he suddenly decided he prefered formula. He hasn't fed on either breast for a week but my left breast is still swollen and lumpy. I'm scared it'll lead to mastitus. I've tried massaging it and hot compress etc but I'm surprised it's taking this long for my boobs to learn that they don't need to produce milk anymore. Is this normal? At what stage should I go to the doctor if it doesn't go away? It hurts when I pick up ds and he pushes against the breast... I had no idea stopping breast-feeding would be as tricky as starting!