Lulu, you are doing such an amazing job. Have you tried your local baby health centre, they can often refer you to a government counsellor or perhaps a support group of women feeling the same as you are. The one I went to had a in house creche by some lovely women so that we could actually go to the support group. You could also try finding another pyschologist as mine saw me fairly quickly. Have you heard of Panda? Their helpline is 1300 726 306, they may be able to give you some strategies to get you through.

Your local doctor may be able to refer you to someone as well. There are lots of avenues for help, but unfortunately they aren't advertised. Get the help and don't feel bad leaving your two little ones if you need to help you feel better. PND is a long and ugly road (I'm still on it with Julian) so i can only imagine how you are feeling. Take care of yourself xox