How long have you been suffering from PPD?

I have been suffering from PPD and PPA since 2012 when I gave birth to my first child, it subsided some when I got pregnant in August 2013, but it came full force when I suffered my first m/c and the in December 2013 it subsided again when I became pregnant, but returned again when I suffered my second m/c January 2014. It subsided yet again when I became pregnant in June 2014 and after the birth of my son February 2015 it really hit hard and has stopped since. I am struggling to make it through daily life and I am honestly at the end of my rope.