PPD is an "umbrella term" for a half-dozen things that mothers can experience in the first or even second year postpartum.  Postpartum Depression, Postpartum Anxiety, Postpartum Panic, Postpartum with obsessions (scary thoughts), Postpartum PTSD (posttraumatic stress disorder).  PPD is NOT just a feeling of not wanting to get up, being sad all the time, crying and the more usual things we think of when we think of "depression".

Symptoms

Feeling worried, sad, angry (yes, angry!), nervous, not like yourself, scared, having scary thoughts, overwhelmed, can't sleep when baby sleeps, keep replaying parts of your birth experience?  These are just a few symptoms. 

Postpartum Support International

Postpartum Support International (PSI) is an international prenatal & postpartum depression support organization.  For symptoms, go to their link, "Postpartum Mood Disorder Information".

Symptoms Checklist

Above is a link to a thorough self-assessment symptoms checklist.  Fill it out, print it, and take it with you to your doctor as a base for your conversation.