Leah,
As Joyce said, it is the loss of control that is most depressing. It was very normal for you to feel blue and defeated. Thank God it doesn't happen often as He will fill you with lots of strength. I agree with dwelling on the funny stuff. Believe me it really is there. I was so blessed with my type of B/C. I did not have to go through any chemo or rad. My type of cancer was resilient to that type of treatment and only the mast. would do. So I really haven't experienced what you are going through. But experiencing grief for your loss of health and physical loss is something all of us can understand. I cried many times in the shower. I seems to be the most private of spaces.
I will pray that the Lord helps you through your journey.
Thank you for sharing your feelings with us and always come to us. It helps to write it down (It is like speaking out loud.) We will always listen and try to help. AND.....we all have our days that we need to vent. I thank God for this wonderful site. It saved my sanity after my dx. and I have made lasting friendships that I hold deep in my heart.
Hugs to you my new Breast Friend,
Candy