boobie problem...

LittleBirdy24

Right now we are EBFing and I'd like to keep it that way as long as possible, but I'm having an issue with one breast.  While I was still in the hospital, my right nipple became super sore and LO made it bleed because she was sucking so hard.  I ended up getting mastitis on that side and for a few days was only pumping that side because it hurt too much to let her nurse on it.  Now, my left side (when I pump) can make upwards of 4 oz whereas my right side can barely make an ounce if I'm lucky.  Is this normal?  Also, the breast not producing as much milk is MUCH smaller in size...like a full cup or more, could this be causing the problem, or be because of the lack of milk?  TIA!!