I pumped the other evening and was able to get 2 oz from my left breast, but nothing from my right. I generally get about 2 oz from each one when I pump so this was a bit of a shock to me. I pumped again the next evening and was able to get close to 3 oz from the left breast and 1 oz from the right one. Can you lose your milk supply in one breast? If so, is there anything special I should start doing so I do not lose the supply in my right breast?