It is absolutely, totally all right to feel sad, dear Barbara. Cancer is a life-changing event; some days we manage better than on other days. I am the caregiver to my husband and, even though I think I know what to expect as the treatment progresses, there have been days when I have felt I have lost control over both our lives. I now give myself little, more reachable goals to focus on, e.g. when John gets a smoothie down or when he has drunk 500 ml of ginger ale. I see these as steps forward. It has helped me feel better in my role as the "feeding police." Of course, if I feel quite frustrated, I go and have a good cry. Loads of hugs for you.