i think i know exactly how you feel. I would have a good run of good days then be out for a few days not coping. because of the good days i thought that maybe i didnt have a legitimate claim to PND. it wasnt until i spoke to someone at panda that they told me that it completely normal to be on a roller coaster.
i though panda org au (it also has a link for self-management strategies) was good. beyondblue isnt bad either...
if it turns out that you have pnd, dont despair, you're certainly not alone (recent data showing that AT LEAST 1 in 7 girls will have it at some point). and it doesnt have to be a forever thing, you can be you again (as i have found out!). there are some awesome girls on here that are/have travelled the same path and we have a pretty good support network happening...JIC.
Bookmarks