I won't even pretend to understand all of your feelings and the problems you are facing. I can related to the emptiness, hopeless, etc. etc. that results in tears running down your face for absolutely no reason what so ever.
"They" diagnose you as suffering from depression and I say
Soooooooo?????
I can't really provide you with any easy fix for the crying spells but physical exercise helps. My solution to crying is to go outside and dig in my backyard. (I live in south Florida where temps rarely go below 40)
Just imagine a 250 pound fat lady digging holes all over her backyard.
"They" tell me things will get better. I'm still trying to figure out when.