I am at my 1 week plus confinement and few days back I can pump like 80ml for both side of breast and suddenly my supply drop dramatically and now I can only pump 20ml to 40 for both. I am so sad that I cannot produce milk for my LO. Any mummies encounter this?

Are you having sufficient rest? Lack of sleep can cause a drop in supply. Besides that you also need to increase your liquid intake daily. I would say at least 3 litre of water (red date tea, soup, tonic etc). Besides that, you need to be very diligent in pumping. If you're pumping exclusively, you will need to pump every 3 hours to increase and maintain supply. Hope this helps.