Can stress decrease my breast milk supply? What should I do?

Stress is definitely a milk killer. Haven't you heard of the phrase "It's all in the mind?"? You'll have to try as much as possible to let everything go and believe that your body can produce enough milk to feed your baby. At the same time, ensure that you consume enough fluids and try to eat a variety of foods to find your milk booster. Magnolia Oats Plus milk and MILO australian recipe have been said to be milk boosters for many women. http://breastfeeding.about.com/od/howdoesbreastfeedingwork/a/Factors-That-Can-Influence-Your-Breast-Milk-Supply.htm

Yes, most definitely. I struggled so much and was only yielding 30 to 50ml (3 weeks post delivery) every 2 hours and it got lesser and lesser each day. Instead, what I should have done was to relax and think of happier times. Be near to your baby (if he's sleeping) and get your spouse to cuddle you if he's available. Otherwise, switch on your favourite drama and have a hot drink and biscuit while you pump.

Try power pumping to increase supply. http://sg.theasianparent.com/power-pumping-an-alternative-way-to-increase-milk-supply/

thanks