Hi mummy, i know your frustration. For me, as long as baby is fed, bb is full, gaining weight well and have adequate output, is all i can ever hope for. It's not your fault. Right now everytime i pump, my yield is only 10-40ml. I can only feed him my bm once every 3 days! The rest is all fm. So mummy, FED is best ok! Don't stress. More stress, less milk. Drink lots of water!