You have definitely found a great place to vent and just to be.
We all understand, in some way, the emotional toll that cancer takes and of course the physical toll.
Just stick around..read everything and see what an amazing group of people contribute to this board every day.
As a caregiver, I experienced depression well after my hubby ended treatment. After everything calmed down and even with good reports for Bill, I was a wreck. I did come out of it without medical or pharmaceutical intervention, but many here will report that they had good help from counseling and drugs.
I wish you the best and hope that your family has seen the last of this disease for a long time.
Deb