Fortunately for the human race, the majority of whom have been subject to stressful life events for the majority of the 100,000 (or so!) years homo sapiens has existed, milk is unaffected in quantity or quality by stress.
Kama, you are incorrect, sorry. Stress hormones do affect the milk, and they are found in breastmilk, and increase with the mother's stress levels. However, there is no evidence that this 'damages' the quality of the milk or the baby's own stress levels - and breastfeeding itself is shown to reduce stress levels in mum and in baby.
Also, stress does not affect the amount of milk produced.
Acute stress may affect let down in the short term.
I have references for all of this, if anyone's interested. It's all evidence-based.
misbumpy - it's normal for breasts not to feel so full when bf is well-established. Bf does 'use' some of your own resources, so you need to take care of yourself to maintain your well-being, but the good news is your baby will take/make the milk he wants, as long as you continue to feed, and the quality will be fine