You might have a plugged duct. Best thing to do, if this is the case, is to put a warm/slightly hot (that you can stand comfortably) compress on it while you are nursing or pumping/immediately before. You can also take a hot shower and try to milk yourself, and you should nurse on that side as much as you can and massage in the affected area(s) down towards your nipple/baby's mouth. That has worked well for me in the past.
Also, what kind of medela pump do you have?? Do you have extra horns? Usually they come with two sizes - I found that I started off using the smaller of the two and then I switched to the larger diameter ones and my milk output increased while pumping. Good luck!
One ounce per side is normal max output, so that in itself is not a problem.If you're not using massage while pumping, start.
Quoting mindysue852:
I have a medela pump in style. I only have what came with the pump...I saw a lactation consultant when my son was a month old and they said it was the right fit. I will try replacing the membranes and using a warm compress. It never happens when I'm home with my son, only when I'm at work and need to pump 4-5x a day. And yeah I know 4 oz is a lot at this point. It makes up for the other side where I only get an ounce each time. Makes me look really unbalanced, I'm pretty flat chested so it's especially noticeable when I can't express the milk. Ahhh the things we do for our children right :)



- mindysue852
on Feb. 18, 2013 at 11:52 AM