Looking after a baby is a constant, and at times isolating, experience (more so if there is little emotional and practical support). It can be very stressful for the woman if she feels ill prepared (and possibly at various times unable to cope) with her baby's demands, while trying to keep her sense of 'self' and identity. This can also be the case with subsequent babies and trying to juggle the care of siblings, with that of the new baby. Combine these circumstances with sleep deprivation, the partner returning to work, relationship changes, little social interaction, the adjustment to having no income (if previously working) and virtually no control over the new 'work situation' (and often your own life), it is little wonder that many women experience some degree of depression after their baby is born.
For many women, being honest with their feelings can be frightening, but ignoring them can be devastating. If you are constantly feeling low, upset, out of control, angry or frustrated with yourself, acknowledge these feelings and tell someone you trust. Implementing some extra support around the house or with your baby, joining a mothers group, or seeking counselling may help. However, if things don't improve, you may need to seek professional help. Hoping you can work through it on your own usually does not work, if anything it can allow the feelings to become worse.
Most women will experience a wide range of emotional responses in the weeks and months after the birth. However, for about 15% of women, unpleasant feelings will start to be felt in the weeks and months following the birth (up to when the baby is about 12 months old). These can manifest as a range of emotions, and if they persist for more than a couple of weeks, may be symptomatic of postnatal depression.