notgivingin - I also suffered with depression after my daughter was born. I had never experienced anything like it before. I felt incredibly bleak and despairing inside all the time. It started before I'd even left the hospital with her 
I was treated with anti depressants but they didn't really lift the depression, they just made me feel numb and like a robot. I wish I had been treated with hormones instead. Have you read Prof. John Studd's website? He's got some really interesting stuff on there about PND and hormonal depression. I recognised myself immediately.
I hope you start to feel better soon x
Thanks for the info about Prof. John Studd's website.
Sorry to hear you had to go through PND as well as meno depression.