I've just caught up with this thread OP.
I am sorry you got a hard time in the beginning, sometimes it takes some wise mumsnetters to realise things you are not what they appear.
I had PND with dd, the reality of being a mum overwhelmed me.
I also had counseling and it helped immensely.
I'm very far from a perfect mum, I dont think I've done everything right with my DCs. For the most part they are lovely but parenting teenage children brings its own set of unique challenges!
I don't always have a home cooked meal on the table, my house is not ever always spotless and I outsource my ironing and oven cleaning because I have now accepted I'm not superwoman, and I don't have to be.
I'm also not a size 8 anymore but I guess it doesn't matter do much to me, if it did I suppose I'd find more time to go to the gym :)
I suppose what I'm trying to say is accept the help that is out there, and don't be ashamed of not being whatever you consider to be the perfect mum.
There's no such thing is there?
We all make mistakes, we all fall down sometimes.
As long as you are doing the best job you personally can do, it's ok.
And if you need a little help along the way? Well that's ok too.