Do you know how much milk you are making?
A couple weeks ago I had a stubborn plugged duct (I still get them every so often) that I didn't want to turn into mastitis and decided to pump mid-day since Morgan only nurses in the middle of the night. I was surprised to find that I only pumped 1 oz between both of my breasts. I knew that I wasn't making a lot, but I figured I would have had 2 or 3 oz in there. It was interesting to me. Of course I froze that ounce....I can't dump bm even now :-)
And yes, Morgan is still nursing in the middle of the night. She is down to one time though (two if she is sick/teething).