Quoting Natural Goddess Mommy:" what do you do if your husband doesn't understand that this is your body and hormnones controlling the ... [snip!] ... bitch who promised everything would be fine and I could handle it. Well, that's like saying I promise I won't get cancer, kwim?"
both of our sons were very planned, and I still suffered very bad PPD.
Do you have any history of depression? If you have depression, or a history of it, you are more prone to PPD.
What your husband needs to see is that this is something that a LOT of women suffer from, and that it isn't something you can control. My husband is very understanding, but I know a lot of men really struggle with empathy in this situation.
I would consider one of two directions:
1. internet research about PPD and what causes it, how it is hormonal, etc. Use credible sources like the mayo clinic and .org or .edu sites. they tend to be most factually correct. If he isn't an ass, he will learn from the sites you post
2. IF he is still really struggling with understanding what is going on with you, I would call my OBGYN and ask to set up an appt with the nurse practitioner or OB youv'e been seeing to treat your PPD. Tell them that you need to bring in your husband and you'd like the dr to explain to you both what is going on.
I've had a few friends' husbands go with option number 1, and their husbands seem to get it, but I have had two friends take their husbands in to the OB for a little meeting with the dr to further explain what's going on, how serious it is, and that it is NOT something you can control.