Hi LKsMummy I'm a single parent too, have one DD aged 3 (nearly 4) and her father has never had anything to do with her.
I haven't had PND but I suffered very badly with depression before I got pregnant with DD and it comes back every now and again.
I've only got one friend who lives near me, my best friend, who I love dearly but she doesn't have any children and although she's godmother to DD, and great with her, I never feel like she really "gets" how hard it can be sometimes.
Like now for example, DD has been a nightmare since the second I picked her up from nursery earlier and she just will not settle down to sleep - it's driving me crazy!
It just seems like my friend has it so easy in comparison - she goes to work (part time), she drives so has the freedom that that brings, she can go out whenever she likes, she lives at home with her parents, has her meals cooked for her, rarely has to do any housework, doesn't have the responsibility of a child or a house, or bills/rent to pay etc.
And when she's at home, she has her family around her, or she's with her boyfriend or his family, whereas I'm pretty much on my own with DD all the time.
Things get better though, I know I'm amazingly lucky to have wonderful DD, a nice house, I'm studying for a degree part time, and I'e just got a part time job that I'm really looking forward to. So I actually love my life at the moment, but it sometimes gets to me that other people can swan around doing whatever they want, especially when they moan about really insignificant stuff and how "hard done by" they are, when I very much doubt they'd be able to cope for 5 minutes in a single parents shoes!
Oh, sorry for the rant!