Sore, i remenber try the nipple butter. That helps sore nipples. I also had a breast pump that the piece that gos on the nipple was to small, normal. But too small for me, i had to get bigger ones. That helped alot. An infection can cause less milk. I would def. Call ur doc. See if u have the right size nipple suckins. And butter.. good luck
I pumped for 2 or 3 days when she was a week old cause i was so sore. I haven't pumped for at least a week. I might ring the doctor in the morning to check.
Are you soley pumping and using a bottle? I've heard your supply will lessen if you soley pump. You might want to supplement formula for some of her feedings. Call her dr and ask how much she should be eatting.