Almost 60 percent of new mothers suffer from post-partum depression. This disorder can be mild or severe. The mild form is also known as "baby blues." Mild symptoms include anxiety, depression, irritability, confusion, crying spells, as well as sleep and appetite disturbances. These feelings can last anywhere between 24 hours to 72 hours. More drastic symptoms come with post-partum depression, including hopelessness, suicidal thoughts, infanticide, panic, among many other feelings that can last for weeks or even months.