update on this: 2 days after my post, I started my period, and have been regular since then every four weeks. The problem is, I get extra unbelievably tired for a week before a period. According to the gynocologist, it could be that I am close to menopause, or it could be from the radiation. Other than those times, my energy has been coming back , not perfect, of course, but I manage eight hour days at work, and even cook a meal after work on occasion - and even taste some of it!!! But for that week or ten days I am back to staying in bed as long as possible, and barely making it through the day at work.
Now I really look forward to menopause.
Leena