Glenn,
Although each experience is individual, a lot of us here, including myself, experienced my first and worst depression after my treatment ended. They kept me so busy going to the hospital once, then twice a day for radiation, in addition to seeing dentists, nurses, oncologists, etc. Then, all of a sudden...there I was...at home, sitting around, watching too much T.V., feeling I had nothing to look forward to ...my next tube feeding...whoopee. I had time to go to the movies or to the park to putt golf balls or to visit a friend or the office...but I did not feel like doing any of that stuff. For me, this was definitely the most difficult period. After initial diagnosis I was kind of cocky, thinking I can handle any of this stuff...but the depression after treatment ended really knocked me back.
However, I fought it, first by taking a nice long walk every day, getting friends to visit, staying more busy, finding some counselling resources, and best of all finding this website.
So, it is different for everyone, but typically that is a really hard period.
Best of luck..
Danny G.