From the National Institute Of Mental Health

Women with depressive illnesses do not all experience the same symptoms. In addition, the severity and frequency of symptoms, and how long they last, will vary depending on the individual and her particular illness. Signs and symptoms of depression include:

• Persistent sad, anxious, or "empty" feelings
• Loss of interest or pleasure in activities, including sex
• Feelings of hopelessness and/or pessimism
• Insomnia, waking up during the night, or excessive sleeping
• Feelings of guilt, worthlessness and/or helplessness
• Overeating or appetite loss
• Irritability, restlessness, anxiety
• Decreased energy and fatigue
• Thoughts of suicide, or suicide attempts
• Difficulty concentrating, remembering details and making decisions
• Persistent aches or pains, headaches, cramps or digestive problems that do not ease even with treatment