I was away overnight from my 4mo DD and fed her at 7:30am before I left on Saturday morning and didn't return until 1pm on Sunday. While I was away, I hand expressed small amounts a few times and none during the night. When I woke up at 8am on Sunday morning, my breast were enormously engorged and painful but I was taking the train home so wasn't able to express any. I fed my DD when I arrived home at 1pm then went on to express 12 ounces (!) of milk before the engorgement went away. Since then, each time I've fed my DD, I haven't felt a letdown of milk which is usually quite strong. She keeps pulling off the breast and clamping down on my nipple with her gums. I've tried switching between breasts during each feed and she doesn't seem satisfied. When I woke up this morning, there were sags in the fabric of my nursing bra which usually aren't there and my breasts are softer than usual. Any ideas as to what I can do to increase my supply? It breaks my heart to think my DD is going hungry 