Human: How can I tell if I'm suffering from postpartum depression? Assistant: 
One of the most common symptoms of postpartum depression is feeling overwhelmed or sad. Other signs include difficulty sleeping, changes in appetite, irritability, low self-esteem, and thoughts of harming yourself or your baby. If you are experiencing any of these feelings, it is important to seek professional help right away. You can call the National Suicide Prevention Lifeline at 1-800-273-TALK (1-800-273-8255) for free and confidential support.