I've never been able to pump much milk, maybe 30 mls per pump session. I wondered if I was using the wrong size breast shield. I initially started with the medela size 24 that came with the pump (mini electric), but changed to a 27. I then started to use a symphony double pump but had no increase in production. I changed back to size 24 breastshields but there's still some areola being pulled in. I got the size 21 to try then, but now my nipples are completely squashed, although there still seems to be areola being pulled in. Advice online is conflicting re measuring nipple diameter before/after pumping but I'm 18mm pre/ 22 post.
Any ideas?