If the symptoms start anytime during the first year it seems to be considered as pnd. Go and see your dr they can refer you to counselling or put you on medication, and trust me it helps so much. I was put on medication a couple of months ago and the difference is amazing I am back to being me not the sad evil and nasty person I had become. There is so much more to life than living with depression and not doing anything about it. Good luck and it does get better!!