The reason why you pumped out 40ml only was because you latched her first. So she would have drank some of the milk already. Don't try to stress too much about your supply cos stress is not good.
Try to pump after you latch on to build up your supply and to build a stash of frozen breastmilk at home. When you return to work, the important thing is to pump regularly. Don't miss a pumping session if possible. You can also try power pumping now if you can. This helps to increase supply too. Jiayou mummy!
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